Dictionary.net

Of or pertaining to atoms.

Extremely minute; tiny.

Of or pertaining to atoms.

Extremely minute; tiny.

Pertaining to or consisting of atoms; extremely minute. The Atomic philosophy, of the ancient Epicureans, that atoms are endued with gravity and motion, by which all things were formed without the agency of God. The Atomic theory, or the doctrine of definite proportions, that all chemical combinations take place between the ultimate particles of bodies, and that these unite, either atom with atom, or in a proportion expressed by some simple multiple of the number of atoms. Atomic weights, the relative weights of bodies, and therefore their atoms in chemical combination. See Equivalent.

Relating to atoms; consisting of atoms.

Consisting of atoms; relating to atoms.