atom

The ion differs from the molecule, the corpuscle and the atom in that it is an ion.

Fictions or realities, could they survive the touchstone of this atom of common sense?

It wad but raise a strife atween the twa, ohn dune an atom o' guid.

Even the good things that the atom had brought were destroyed in the panic that ensued.

An atom of any kind is not the inert thing it has been supposed to be, for it can do something.

The atom retains its identity through all combinations and processes.

Stop the rotation, and the atom would be annihilated for the same reason.

And now—well, now he could not seem to arouse an atom of real enthusiasm.

Yet all must come, as surely as the first atom has two sides.

"He will give just enough of the atom pile for seventy million miles," he says.