Meaning

noun the act of rejecting something

noun the state of being rejected

noun (medicine) an immunological response that refuses to accept substances or organisms that are recognized as foreign

originFrom French réjection or directly from Latin reiectiōnem, accusative of Latin reiectiō. Displaced native Old English āworpennes (literally “thrown-out-ness”).

Etymology from Wiktionary, CC BY-SA 3.0