mid-15c., "knowledge of an event or incident; understanding," from Middle French recognition (15c.) and directly from Latin recognitionem (nominative recognitio) "a reviewing, investigation, examination," noun of action from past participle stem of recognoscere "to acknowledge, know again; examine" (see recognize).
Sense of "formal avowal of knowledge and approval" is from 1590s; especially acknowledgement of the independence of a country by a state formerly exercising sovereignty (1824). Meaning "a knowing again" is from 1798.
recognition rec·og·ni·tion (rěk'əg-nĭsh'ən)
An awareness that something perceived has been perceived before.
The ability of one molecule to attach itself to another molecule having a complementary shape, as in enzyme-substrate interactions.
In diplomacy, the act by which one nation acknowledges that a foreign government is a legitimate government and exchanges diplomats with it. The withholding of recognition is a way for one government to show its disapproval of another.