monad
1. An ultimate atom, or simple, unextended point; something ultimate and indivisible.
2. (Science: philosophy) 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.
3. (Science: zoology) One of the smallest flangellate infusoria; especially, the species of the genus monas, and allied genera.
4. (Science: biology) A simple, minute organism; a primary cell, germ, or plastid.
5. (Science: chemistry) An atom or radical whose valence is one, or which can combine with, be replaced by, or exchanged for, one atom of hydrogen.
(Science: biology) Monad deme, in tectology, a unit of the first order of individuality.
Origin: L. Monas, -adis, a unit, Gr, fr. Alone.
Dictionary > Monad
You will also like...
Control of Body Movement
Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..
Homeostatic Mechanisms and Cellular Communication
Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..
The Evolution of Cell Organelles
The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..
Genetics and Evolution
Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..
Plant Biology
Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..
Biological Cell Defense
Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..