indivisible

Etymology

PIE word *dwóh₁ From Middle French indivisible, from Late Latin indivisibilis.

adj

1. Incapable of being divided; atomic.
   Although the mainland and Taiwan are yet to be reunited, they belong to one and same China, which is an indivisible whole. 2014 [June 13, 2013], Jinping Xi, “Handle Cross-Straits Relations in the Overall Interests of the Chinese Nation”, in The Governance of China, volume I, Beijing: Foreign Languages Press, →OCLC, page https://archive.org/details/xijinpingthegovernanceofchinavolume1/page/n260
2. (arithmetic) Incapable of being divided by a specific integer without leaving a remainder.

noun

1. That which cannot be divided or split.
   By atom, nobody will imagine we intend to express a perfect indivisible, but only the least sort of natural bodies.
2. (geometry) An infinitely small quantity which is assumed to admit of no further division.