Id
来自Big Physics
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1920s: from Latin, literally ‘that’, translating German es . The term was first used in this sense by Freud, following use in a similar sense by his contemporary, Georg Groddeck.
wiktionary
From New Latin id(“it”), chosen by Freud’s translator as a translation of his use of German Es as a noun for this concept from the pronoun es(“it”).
From Swedish id.
Abbreviation of identifier.
Abbreviation of idem., from Latin idem(“same”)
etymonline
id (n.)
1924, in Joan Riviere's translation of Freud's "Das Ich und das Es" (1923), from Latin id "it" (as a translation of German es "it" in Freud's title), used in psychoanalytical theory to denote the unconscious instinctual force. Latin id is from PIE pronominal stem *i- (see yon).
