monad

(noun)

noun

1. (chemistry) an atom having a valence of one

Definition categories: substance, atom

2. a singular metaphysical entity from which material properties are said to derive

Similar word(s): monas

Definition categories: quantity, ace, one, single, unity

3. (biology) a single-celled microorganism (especially a flagellate protozoan)

Definition categories: animal, microorganism