Noun
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| building block -
a block of material used in construction work
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building material material used for constructing buildings
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ashlar a rectangular block of hewn stone used for building purposes
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breeze block,
cinder block,
clinker block a light concrete building block made with cinder aggregate; "cinder blocks are called breeze blocks in Britain"
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headstone,
keystone,
key the central building block at the top of an arch or vault
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| building block -
a single undivided natural thing occurring in the composition of something else; "units of nucleic acids"
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unit |
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thing a separate and self-contained entity
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chemical chain,
chain a series of (usually metal) rings or links fitted into one another to make a flexible ligament
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couple a pair who associate with one another; "the engaged couple"; "an inseparable twosome"
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part,
piece something less than the whole of a human artifact; "the rear part of the house"; "glue the two parts together"
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unit cell the smallest group of atoms or molecules whose repetition at regular intervals in three dimensions produces the lattices of a crystal
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chemical group,
group,
radical any number of entities (members) considered as a unit
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