building block
noun
1 building block
A single undivided natural thing occurring in the composition of something else.
synonym: unit.
2 building block
A block of material used in construction work.
Moby thesaurus: air, atom, atomic particles, atoms, brute matter, chemical element, component, constituent, core, distillate, distillation, earth, element, elementary particle, elementary unit, elixir, essence, fabric, fire, fundamental particle ... show more.
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