• WordNet 3.6
    • n monad (biology) a single-celled microorganism (especially a flagellate protozoan)
    • n monad a singular metaphysical entity from which material properties are said to derive
    • n monad (chemistry) an atom having a valence of one
    • ***
Webster's Revised Unabridged Dictionary
    • Monad (Biol) A simple, minute organism; a primary cell, germ, or plastid.
    • Monad (Chem) An atom or radical whose valence is one, or which can combine with, be replaced by, or exchanged for, one atom of hydrogen.
    • Monad An ultimate atom, or simple, unextended point; something ultimate and indivisible.
    • Monad (Zoöl) One of the smallest flagellate Infusoria; esp., the species of the genus Monas, and allied genera.
    • Monad (Philos. of Leibnitz) 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.
    • ***
Century Dictionary and Cyclopedia
    • n monad In metaphysics, an individual and indivisible substance. The word was introduced into philosophy by Giordano Bruno to denote the minimum parts of substances supposed by him to be at once psychical and material. In the philosophy of Leibnitz the conception of the monad is that of an absolutely unextended substance existing in space, its existence consisting in its activities, which are ideas; and the universe was conceived by him as made up of such existences. The history of each monad follows an internal law, and all interaction between the monads is excluded; but there is a preestablished harmony between these laws for the different monads. (See Leibnitzian.) The Leibnitzian theory of the monad was, in many particulars, revived by Hermann Lotze.
    • n monad In biology:
    • n monad Any simple single-celled organism. The name covers a great many similar but not necessarily related unicellular organisms, some of which are monads in sense , others being plants; others again are free flagellate cells representing an embryonic condition of some other organism or of wholly indeterminate character.
    • n monad In zoology, specifically, a flagellate infusorian; one of the Infusoria flagellata, characterized by the possession of one or two long whip-like flagella, and generally exhibiting an endoplast and a contractile vacuole. The word in this sense is derived from the name of the genus Monas.
    • n monad In chem., an element whose atoms have the lowest valence or atomicity, which valence is therefore taken as unity.
    • monad In chem. and biology, of or pertaining to monads; of the nature of a monad; monadi-form.
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Chambers's Twentieth Century Dictionary
    • n Monad mon′ad an ultimate atom or simple unextended point: a simple, primary element, assumed by Leibnitz and other philosophers:
    • adj Monad of or pertaining to monads
    • n Monad mon′ad (zool.) one of the simplest of animalcules
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Webster's Revised Unabridged Dictionary
L. monas, -adis, a unit, Gr. , , fr. mo`nos alone
Chambers's Twentieth Century Dictionary
L. monas, -adis—Gr. monas, -ados, a unit—monos, alone.


In literature:

The complex vision is the vision of a living self, of an organic personality, of an actual soul-monad.
"The Complex Vision" by John Cowper Powys
Pythagoras held that the unit or monad is the principle and end of all.
"Three Thousand Years of Mental Healing" by George Barton Cutten
MONADS, in Leibniz, 338.
"The Approach to Philosophy" by Ralph Barton Perry
Were God a bare monad, He could not impart Himself and remain Himself.
"Monophysitism Past and Present" by A. A. Luce
In each of these Enneads there is a Monad, and in each Monad a Space called "Incorruptible": that is to say, "Holy ground.
"The Gnôsis of the Light" by F. Lamplugh
It is otherwise with the theory of Monads.
"History of Modern Philosophy" by Alfred William Benn
A suspicion of cat-calling in a monad state of development about the door.
"The Atlantic Monthly, Volume 11, No. 68, June, 1863" by Various
And such monads are the only things ever produced directly by this blind deity.
"The Religion of Geology and Its Connected Sciences" by Edward Hitchcock
This something, formerly called a monad, is imperceptible.
"Voltaire's Romances" by François-Marie Arouet
There may be in us an indestructible monad which feels and thinks, without our knowing anything at all of how that monad is made.
"A Philosophical Dictionary, Volume 5 (of 10)" by François-Marie Arouet (AKA Voltaire)

In poetry:

The unearthed monad, long in buried rocks hid,
Shall tell the secret whence our being came;
The chemist show us death is life's black oxide,
Left when the breath no longer fans its flame.
"The Coming Era" by Oliver Wendell Holmes
There, is vice and wanton youth,—
There, contented worth and truth,—
There, the sons of toil and skill,—
And the thousands gather still
— Ah! poor monad, what am I
In this crowd of passers by?
"A Thought In A Thoroughfare" by Martin Farquhar Tupper

In news:

Besides the standard methods of modal logic , the technical toolkit includes the method of quasimodels, mosaics, tilings, reductions to monadic second-order logic , algebraic logic techniques.
Jeffrey Snover is Monad 's architect.
Off Broadway's yearly celebration of our loveable local crustacean will not, for the first time ever, feature a performance by the now-defunct Monads.
Join me Saturday July 14 for a live broadcast at 3G's Convenience Store at Monad and 24th from noon until 2 for your chance to win a pair of tickets to the show on July 22 at the Rimrock Auto Arena.
Storage Server, E12 and Monad, ISA, and Readers' Choice.
Monad Trainer's Aide, a distributor of HR training materials, has announced a limited-time discount of VisionPoint's DVD inventory.
Until December 31, Monad is offering training and development professionals discount pricing of up to 45 percent.

In science:

Monads would also immediately allow us to deal with reducts other than optional terms, namely lists or sets of terms.
Typed Generic Traversal With Term Rewriting Strategies
In particular, concepts such as operads and monads play no role in the basic definitions.
Weak Omega Categories I
The price we pay for this is that our weak omega categories are no longer the algebras for some suitable monad on omega graphs.
Weak Omega Categories I
We show that the left adjoint half of Penon’s monad can be used to define a functor from Omega Graph to Omega Cat and thus gives a way of functorially associating with any omega graph a weak omega category.
Weak Omega Categories I
In any case Omega Cat is very far from being monadic over Omega Graph.
Weak Omega Categories I