1. (noun) a singular metaphysical entity from which material properties are said to derive

• monas

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

• atom

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

• 1
• ace
• i
• one
• single
• unity

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

• micro-organism
• microorganism

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

• chemical science
• chemistry

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

• biological science
• biology