Tiny building block (4 letters)

{ Answer }

ATOM

{ Related Clues }

Iota
Monad
Particle
Speck
Electron's place
An energy source
Energy source
Fissionable unit
Infinitesimal bit
Mighty mite
Molecular part
Power source
Quark's place
Small particle
Subject of fission
Teensy bit
Tiny bit
Tiny particle
Unit of a molecule
Basic building block
First half of the alphabet
Item discussed by Lucretius
Itsy-bitsy bit
Niels Bohr's subject
Thing that might decay
The H, H or O in H2O

{ Tags }

atom, bit, block, building, energy, item, jot, mighty, minute, mite, molecule, monad, part, particle, place, power, source, speck, subject, tiny, unit

{ Notes }

The answer ATOM is very common and appears about once every 40.8 puzzles.

{ Definition }

ATOM as a noun:

1. (physics and chemistry) the smallest component of an element having the chemical properties of the element

2. (atom, molecule, particle, corpuscle, mote, speck) = (nontechnical usage) a tiny piece of anything