Monadic

mo·nad  (mnd)

n.

1. Philosophy An indivisible, impenetrable unit of substance viewed as the basic constituent element of physical reality in the metaphysics of Leibniz.

2. Biology A single-celled microorganism, especially a flagellate protozoan of the genus Monas.

3. Chemistry An atom or a radical with valence 1.

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[Latin monas, monad-, unit, from Greek, from monos, single; see men-⁴ in Indo-European roots.]

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mo·nadic (m-ndk), mo·nadi·cal adj.

mo·nadi·cal·ly adv.

monad·ism n.