tardigrade -
an arthropod of the division Tardigrada
arthropod invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin
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
