The Clue
Concern of Niels Bohr (4 letter answer)
The Answer
ATOM
Tags
Notes
The answer ATOM is very common and appears about once every 41 puzzles.
Related Clues
Bit
Iota
Jot
Monad
___ smasher
Speck
Whit
A.E.C.'s concern
An energy source
Energy source
Fissionable item
Isotope, e.g.
Item for Bohr
Kind of smasher
Lepton's locale
Little bit
Little matter
Mighty mite
Minute particle
Moat anagram
Molecule member
Part of a molecule
Physicist's concern
Pion's place
Positron's place
Small particle
Split bit
One of three for H2O
Tiny bit
Unit in physics
Basic building block
Basis of all, to Lucretius
Building block of molecules
First half of the alphabet
It's little matter
Nuclear energy source
Volume 1 of a two-volume encyclopedia?
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