[ mon-ad, moh-nad ]
/ ˈmɒn æd, ˈmoʊ næd /


  1. any simple, single-celled organism.
  2. any of various small, flagellate, colorless ameboids with one to three flagella, especially of the genus Monas.
Chemistry. an element, atom, or group having a valence of one.Compare dyad(def 3), triad(def 2a).
  1. (in the metaphysics of Leibniz) an unextended, indivisible, and indestructible entity that is the basic or ultimate constituent of the universe and a microcosm of it.
  2. (in the philosophy of Giordano Bruno) a basic and irreducible metaphysical unit that is spatially and psychically individuated.
  3. any basic metaphysical entity, especially having an autonomous life.
a single unit or entity.



How well do you know your adjectives from your adverbs? Your preposition from your pronouns? Your interjections from your conjunctions? Let’s put your knowledge of parts of speech to the text! Note: Many of the following questions will ask you to identify the parts of speech “in order.” That means the first word in all capital letters will correspond to the first option in an answer, and so on.
Question 1 of 10
In order, what parts of speech are the words in all capital letters? Alisa was VERY tired, SO she decided to go to bed.

Origin of monad

1605–15; < Late Latin monad- (stem of monas) < Greek (stem of monás): unity. See mon-, -ad1


mo·nad·ic [muh-nad-ik] /məˈnæd ɪk/, mo·nad·i·cal, mo·nad·al, adjectivemo·nad·i·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for monadic

  • It is the monadic essence, or material used in creation, or it may be called the outpouring of Divine force into matter.

    Ghosts I Have Seen|Violet Tweedale

British Dictionary definitions for monadic (1 of 2)

/ (mɒˈnædɪk) /


being or relating to a monad
logic maths (of an operator, predicate, etc) having only a single argument place

British Dictionary definitions for monadic (2 of 2)

/ (ˈmɒnæd, ˈməʊ-) /


plural -ads or -ades (-əˌdiːz) philosophy
  1. any fundamental singular metaphysical entity, esp if autonomous
  2. (in the metaphysics of Leibnitz) a simple indestructible nonspatial element regarded as the unit of which reality consists
  3. (in the pantheistic philosophy of Giordano Bruno) a fundamental metaphysical unit that is spatially extended and psychically aware
a single-celled organism, esp a flagellate protozoan
an atom, ion, or radical with a valency of one
Also called (for senses 1, 2): monas

Derived forms of monad

monadical, adjectivemonadically, adverb

Word Origin for monad

C17: from Late Latin monas, from Greek: unit, from monos alone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for monadic

[ mōnăd′ ]


An atom or a radical with a valence of 1.
A single-celled microorganism, especially a protozoan of the genus Monas.
Any of the four chromatids of a tetrad that, after the first and second meiotic divisions, separate to become the chromosomal material in each of the four daughter cells.

Other words from monad

mo•nadic (mə-nădik) null adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.