infusoria,
subclass infusoria in some recent classifications, coextensive with the Ciliata: minute organisms found in decomposing infusions of organic matter
chlorophyceae,
class chlorophyceae algae distinguished chiefly by having flagella and a clear green color, their chlorophyll being masked little if at all by other pigments
amphibia,
class amphibia the class of vertebrates that live on land but breed in water; frogs; toads; newts; salamanders; caecilians
class reptilia,
reptilia class of cold-blooded air-breathing vertebrates with completely ossified skeleton and a body usually covered with scales or horny plates; once the dominant land animals
arachnida,
class arachnida a large class of arthropods including spiders and ticks and scorpions and daddy longlegs; have four pairs of walking legs and no wings
superclass myriapoda used in some classifications to encompass the millipedes (Diplopoda) and centipedes (Chilopoda); formerly a large taxon including also the Pauropoda and Symphyla; the term Myriapoda now usually used synonymously with Diplopoda and limited to the millipedes
class pauropoda,
pauropoda an obscure class of minute arthropods with branched antennae and 8 to 10 pairs of legs
class symphyla,
symphyla small class of minute arthropods; unimportant except for the garden centipede
class tardigrada,
tardigrada in some classifications considered a separate phylum: microscopic arachnid-like invertebrates living in water or damp moss having 4 pairs of legs and instead of a mouth a pair of stylets or needlelike piercing organs connected with the pharynx
chilopoda,
class chilopoda arthropods having the trunk composed of numerous somites each bearing one pair of legs: centipedes
pantotheria,
subclass pantotheria generalized extinct mammals widespread during the Jurassic; commonly conceded to be ancestral to marsupial and placental mammals
class hyalospongiae,
hyalospongiae sponges with siliceous spicules that have six rays; choanocytes are restricted to finger-shaped chambers
class scyphozoa,
scyphozoa coelenterates in which the polyp stage is absent or at least inconspicuous: jellyfishes
class hydrozoa,
hydrozoa coelenterates typically having alternation of generations; hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes
opisthobranchia,
subclass opisthobranchia gastropods having the gills when present posterior to the heart and having no operculum: includes sea slugs; sea butterflies; sea hares
class crustacea,
crustacea class of mandibulate arthropods including: lobsters; crabs; shrimps; woodlice; barnacles; decapods; water fleas
malacostraca,
subclass malacostraca largest subclass of Crustacea including most of the well-known marine, freshwater, and terrestrial crustaceans: crabs; lobsters; shrimps; sow bugs; beach flies
entomostraca,
subclass entomostraca in some older classifications includes the Branchiopoda and Copepoda and Ostracoda and Cirripedia; no longer in technical use
branchiopoda,
subclass branchiopoda primitive aquatic mainly freshwater crustaceans: fairy shrimps; brine shrimps; tadpole shrimps; can shrimps; water fleas
class onychophora,
onychophora enigmatic small elongated wormlike terrestrial invertebrates of damp dark habitats in warm regions; distinct from the phylum Annelida; resemble slugs with legs and are sometimes described as the missing link between arthropods and annelids
dipnoi,
subclass dipnoi bony fishes of the southern hemisphere that breathe by a modified air bladder as well as gills; sometimes classified as an order of Crossopterygii
bryopsida,
class bryopsida,
class musci,
musci true mosses: bryophytes having leafy rather than thalloid gametophytes: comprises orders Andreaeales; Bryales; Dicranales; Eubryales; Sphagnales
class gymnospermae,
division gymnospermophyta,
gymnospermae,
gymnospermophyta plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina (class Gnetopsida) and Coniferophytina (class Coniferopsida); in some classifications the Coniferophytina are divided into three groups: Pinophytina (class Pinopsida) and Ginkgophytina (class Ginkgopsida) and Taxophytina (class Taxopsida)
class coniferopsida,
coniferophyta,
coniferophytina,
coniferopsida,
subdivision coniferophytina cone-bearing gymnosperms dating from the Carboniferous period; most are substantial trees; includes the classes Pinopsida (subdivision Pinophytina) and Ginkgopsida (subdivision Ginkgophytina) and Taxopsida (subdivision Taxophytina) which in turn include the surviving orders Coniferales and Taxales (yews) and sometimes Ginkgoales as well as extinct orders such as Cordaitales (of the Carboniferous and Permian)
class pinopsida,
pinophytina,
pinopsida,
subdivision pinophytina most conifers: in some systems classified as a class (Pinopsida) and in others as a subdivision (Pinophytina); used in some classifications for one of five subdivisions of Gymnospermophyta
class dicotyledonae,
class dicotyledones,
class magnoliopsida,
dicotyledonae,
dicotyledones,
magnoliopsida comprising seed plants that produce an embryo with paired cotyledons and net-veined leaves; divided into six (not always well distinguished) subclasses (or superorders): Magnoliidae and Hamamelidae (considered primitive); Caryophyllidae (an early and distinctive offshoot); and three more or less advanced groups: Dilleniidae; Rosidae; Asteridae
magnoliidae,
ranalian complex,
subclass magnoliidae a group of families of trees and shrubs and herbs having well-developed perianths and apocarpous ovaries and generally regarded as the most primitive extant flowering plants; contains 36 families including Magnoliaceae and Ranunculaceae; sometimes classified as a superorder
arecidae,
subclass arecidae one of four subclasses or superorder of Monocotyledones; comprises about 6400 species in 5 families of trees and shrubs and terrestrial herbs and a few free-floating aquatics including: Palmae; Araceae; Pandanaceae and Lemnaceae
commelinidae,
subclass commelinidae one of four subclasses or superorders of Monocotyledones; comprises about 19,000 species in 25 families of mostly terrestrial herbs especially of moist places including: Cyperaceae; Gramineae; Bromeliaceae; and Zingiberaceae
caryophyllidae,
subclass caryophyllidae a group of families of mostly flowers having basal or central placentation and trinucleate pollen (binucleate pollen is commoner in flowering plants); contains 14 families including: Caryophyllaceae (carnations and pinks); Aizoaceae; Amaranthaceae; Batidaceae; Chenopodiaceae; Cactaceae (order Opuntiales); Nyctaginaceae; Phytolaccaceae; corresponds approximately to order Caryophyllales; sometimes classified as a superorder
asteridae,
subclass asteridae a group of mostly sympetalous herbs and some trees and shrubs mostly with 2 fused carpels; contains 43 families including Campanulales; Solanaceae; Scrophulariaceae; Labiatae; Verbenaceae; Rubiaceae; Compositae; sometimes classified as a superorder
hamamelidae,
subclass hamamelidae a group of chiefly woody plants considered among the most primitive of angiosperms; perianth poorly developed or lacking; flowers often unisexual and often in catkins and often wind pollinated; contains 23 families including the Betulaceae and Fagaceae (includes the Amentiferae); sometimes classified as a superorder
dilleniidae,
subclass dilleniidae a group of families of more or less advanced trees and shrubs and herbs having either polypetalous or gamopetalous corollas and often with ovules attached to the walls of the ovary; contains 69 families including Ericaceae and Cruciferae and Malvaceae; sometimes classified as a superorder
liliidae,
subclass liliidae one of four subclasses or superorders of Monocotyledones; comprises 17 families including: Liliaceae; Alliaceae; Amaryllidaceae; Iridaceae; Orchidaceae; Trilliaceae
homobasidiomycetes,
subclass homobasidiomycetes category used in some classification systems for various basidiomycetous fungi including e.g. mushrooms and puffballs which are usually placed in the classes Gasteromycetes and Hymenomycetes
class hymenomycetes,
hymenomycetes used in some classifications; usually coextensive with order Agaricales: mushrooms; toadstools; agarics; bracket fungi
class plectomycetes,
plectomycetes class of fungi in which the fruiting body is a cleistothecium (it releases spores only on decay or disintegration)
class pyrenomycetes,
pyrenomycetes class of fungi in which the fruiting body is a perithecium; includes powdery mildews and ergot and Neurospora
discomycetes,
subclass discomycetes a large and taxonomically difficult group of Ascomycetes in which the fleshy fruiting body is disklike or cup-shaped
estate of the realm,
the three estates,
estate a major social class or order of persons regarded collectively as part of the body politic of the country (especially in the United Kingdom) and formerly possessing distinct political rights
yeomanry a British volunteer cavalry force organized in 1761 for home defense later incorporated into the Territorial Army
caste in some social insects (such as ants) a physically distinct individual or group of individuals specialized to perform certain functions in the colony
caste in some social insects (such as ants) a physically distinct individual or group of individuals specialized to perform certain functions in the colony
ninja a class of 14th century Japanese who were trained in martial arts and were hired for espionage and assassinations
firing line the most advanced and responsible group in an activity; "the firing line is where the action is"
immigrant class recent immigrants who are lumped together as a class by their low socioeconomic status in spite of different cultural backgrounds
center a position on a basketball team of the player who participates in the jump that starts the game
old school a class of people favoring traditional ideas
market the world of commercial activity where goods and services are bought and sold; "without competition there would be no market"; "they were driven from the marketplace"
craft,
trade a vehicle designed for navigation in or on water or air or through outer space
class -
a collection of things sharing a common attribute; "there are two classes of detergents"
substitution class,
paradigm the class of all items that can be substituted into the same position (or slot) in a grammatical sentence (are in paradigmatic relation with one another)
brass family (music) the family of brass instruments
violin family (music) the family of bowed stringed instruments
stamp a block or die used to imprint a mark or design
sex the properties that distinguish organisms on the basis of their reproductive roles; "she didn't want to know the sex of the foetus"
declension a class of nouns or pronouns or adjectives in Indo-European languages having the same (or very similar) inflectional forms; "the first declension in Latin"
conjugation a class of verbs having the same inflectional forms
denomination a class of one kind of unit in a system of numbers or measures or weights or money; "he flashed a fistful of bills of large denominations"
histocompatibility complex a family of fifty or more genes on the sixth human chromosome that code for proteins on the surfaces of cells and that play a role in the immune response
class -
a body of students who graduate together; "the class of '97"; "she was in my year at Hoehandle High"
directed study a course of study that is supervised and controlled by a specialist in the subject; "he registered for directed study"; "he got credit for directed study"; "he did directed study"
class -
A group of students in a regularly scheduled meeting with a teacher.
class -
A series of classes covering a single subject.
class -
A group of students who commenced or completed their education during a particular year. A school class.
class -
A category of seats in an airplane, train or other means of mass transportation.
class -
A rank in the classification of organisms, below phylum and above order; a taxon of that rank.
class -
Best of its kind.
class -
A collection of sets definable by a shared property.
class -
A group of people subject to be conscripted in the same military draft, or more narrowly those persons actually conscripted in a particular draft.
class -
A set of objects having the same behavior but typically differing in state, or a template defining such a set.
class A group, collection, category or set sharing characteristics or attributes.
class A grouping based on shared characteristics.
class A social group of persons of the same economic and professional condition.
class A biological taxon, a group of species, part of a phylum and consisting of one or more orders.
class A category of seats in an airplane, train or other means of mass transportation.
class A group of students in a regularly scheduled meeting with a teacher.
class A meeting with a teacher to learn something.
class The training or instruction provided by a teacher or tutor.
class A programming construct that is used to define a distinct type and defines constituent members that enable its instances to have state and behavior.
class A modifier of an HTML element used as a way of classifying similar elements.
class In computational complexity theory, a set of problems of related resource-based complexity.
