Incapable of being divided; atomic.
Incapable of being divided by a specific integer without leaving a remainder.
An infinitely small quantity which is assumed to admit of no further division.
That which cannot be divided or split.
(of an element) Combined with itself and with no other element; elemental.
Relating to a simple or basic structure or organization.
Relating to, or consisting of, or produced by molecules.
Relating to molecular gastronomy.
Any compound having a specified (range of) molecular weight(s)