monad

/ˌmoʊˈnæd/

Other forms: monads; monades

Definitions of monad

1. noun

   a singular metaphysical entity from which material properties are said to derive
   synonyms: monas

   type of:

   1, I, ace, one, single, unity

   the smallest whole number or a numeral representing this number
2. noun

   (biology) a single-celled microorganism (especially a flagellate protozoan)
   type of:

   micro-organism, microorganism

   any living thing that is too small to be seen with the naked eye
3. noun

   (chemistry) an atom having a valence of one
   type of:

   atom

   (physics and chemistry) the smallest component of an element having the chemical properties of the element