Greek word
átomos
ἄτομος
What it means
uncut, i.e. indivisible
uncut, i.e. (by implication) indivisible (an "atom" of time)
Where it comes from
from A (Α) (as a negative particle) and the base of tomṓteros (τομώτερος)
How the King James translates it
Every place it appears 1
1 Corinthians15:52