ELEMENTAR'ITY ELEMENT'ARY, adjective Primary; simple; uncompounded; uncombined; having only one principle or constituent part; as an elementary substance. Elementary particles are those into which a body is resolved by decomposition. 1. Initial; rudimental; containing, teaching or discussing first principles, rules or rudiments; as an elementary treatise or disquisition. 2. Treating of elements; collecting, digesting or explaining principles; as an elementary writer.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI