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 July 21st, 2021

You will also like...

Independent Assortment and Crossing Over
Independent Assortment and Crossing Over

This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..

Oligodendrocyte and Schwann cell
The Central Nervous System

Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..

Flowers and tiny fruits of the pomegranate plant
Fruits, Flowers, and Seeds

This tutorial deals with the structure and function of flowers, fruits, and seeds. Also included here are the types of f..

Early Earth
The Origins of Life

This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..

Biological Cell Defense
Biological Cell Defense

Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..

Golgi apparatus (3-D illustration)
Role of Golgi Apparatus & Endoplasmic Reticulum in Protein Synthesis

The endoplasmic reticulum and Golgi apparatus are the organelles involved in the translation step of protein synthesis a..