Monad

Monad may refer to:

Philosophy

 * Monad (philosophy), a term meaning "unit"
 * Monism, the concept of "one essence" in the metaphysical and theological theory
 * Monad (Gnosticism), the most primal aspect of God in Gnosticism
 * Great Monad, an older name for the taijitu symbol
 * Monadologia Physica, by Immanuel Kant
 * Monadology, by Gottfried Leibniz, a book about a basic unit of perceptual reality
 *  Monas Hieroglyphica, a 1564 book by John Dee describing a symbol of his own invention

Mathematics, science and technology

 * Monad (biology), a historical term for a simple unicellular organism
 * Monad (category theory), a construction in category theory
 * Monad (functional programming), functional programming constructs that capture various notions of computation
 * Monad (homological algebra), a 3-term complex
 * Monad (nonstandard analysis), the set of points infinitesimally close to a given point
 * Monad shell, the code name for the PowerShell command line interface for Microsoft Windows

Fictional entities

 * Monads, megastructures in Robert Silverberg's 1971 novel The World Inside
 * Monad Proxy, a character in the 2006 anime series Ergo Proxy
 * John Monad, the title character of the 2007 television series John from Cincinnati
 * Monad/Monado, a sword in the 2010 videogame Xenoblade Chronicles

Other uses

 * Monad (music), a single note or pitch
 * Monad University, in Hapur, Uttar Pradesh, India
 * The emblem of the technocracy movement