"Monad" is a word in ENGLISH

The elementary and indestructible units which were conceived
of as endowed with the power to produce all the changes they undergo,
and thus determine all physical and spiritual phenomena.

A simple, minute organism; a primary cell, germ, or plastid.

One of the smallest flangellate Infusoria; esp., the species
of the genus Monas, and allied genera.

An atom or radical whose valence is one, or which can
combine with, be replaced by, or exchanged for, one atom of hydrogen.

An ultimate atom, or simple, unextended point; something
ultimate and indivisible.