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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 formerly classified in the taxonomic group Monadina.

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

mo·nad′ic (mə-năd′ĭk), mo·nad′i·cal adj.
mo·nad′i·cal·ly adv.
mo′nad·ism n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(mɒˈnædɪk) or


1. (Logic) being or relating to a monad
2. (Logic) logic maths (of an operator, predicate, etc) having only a single argument place
3. (Mathematics) logic maths (of an operator, predicate, etc) having only a single argument place
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
As the un/conscious matrix of Yagwoia life-world this monadic Self has to be grasped as the primary 'ego-pole' of the constitutive noesis and imagination of the Yagwoia Self-World synthesis.
Beyond description, classification, and analysis--the purview of the "natural" sciences and of most "social" sciences--humanistic disciplines come together in the ethical sphere, the place where human beings transcend their monadic singularity and act as members of the species.
(2) Elsewhere I have argued that, contrary to the common-sensical definition, chaos is not a multiplicity, but a monad: "From the onto-epistemological point of view, chaos is a monadic lack of meaning.
The bias towards understating willingness to prescribe can be attenuated to some extent by administering the task in a monadic fashion; that is, the sample is split into two or more cells, with each cell answering the willingness to prescribe question with a different price in each cell.
It can be seen that icons are essentially monadic (to borrow a word from Peirce [1897] who followed Leibniz [1691/1953]).
60) In addition to this description, Sowa says that firstness can be "defined by a monadic predicate," secondness by a "dyadic relation," and thirdness by an "irreducible triadic relation" (p.
We use the lower of the two monadic values in a dyad to measure the exposure of a dyad to capital investments.
If one tried to imagine a universe in which this poststructuralist notion really applied, it's a very strange, what Leibnitz might call a "monadic," existence, where one is self-enclosed entirely and impinged upon by objects, by reality, rather than engaging with it.
The ideal to aim at is not a monadic subject, but a person who expresses his or her authentic experiences all-inclusively to others.
Bacon thinks that an individual is not uniquely characterized by the conjunction of all its monadic properties (the principle of the identity of indiscernibles being false).
Existential second-order logic (ESO) and monadic second-order logic (MSO) have attracted much interest in logic and computer science.