Dictionary > Monad

Monad

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.

Last updated on March 3rd, 2021

You will also like...

Chromosomes X and Y and Sex Determination
Chromosomes X and Y and Sex Determination

This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..

dinosaurs
The Dinosaurs

Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presu..

Biological Viruses
Biological Viruses

Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...

Non-Mendelian Inheritance
Non-Mendelian Inheritance

In this tutorial, find out more about certain types of inheritance that does not follow the Mendelian inheritance patter..

Disturbance on a still water
Abiotic Factors – Water Conditions

A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..

Darwin's Finches - Natural Selection
Darwin and Natural Selection

This tutorial investigates the genetic diversity in more detail. It also delineates how certain alleles are favored over..