- ingress (n.)
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- mid-15c., from Latin ingressus "an advance; walking; an entry," from ingress-, past participle stem of ingredi "to step into, enter," from in- "in" (see in- (2)) + gradi "to step, go" (see grade (n.)). The verb meaning "to enter, go in" sometimes said to be American English, but it is attested from early 14c.