Indivisible

Webster's Dictionary of the English Language

·noun That which is indivisible.

II. Indivisible ·adj Not capable of exact division, as one quantity by another; incommensurable.

III. Indivisible ·noun An infinitely small quantity which is assumed to admit of no further division.

IV. Indivisible ·adj Not divisible; incapable of being divided, separated, or broken; not separable into parts.