Even in his failings—the affair with Bathsheba, most famously—David has become the prototype of repentance and divine forgiveness.
A prototype of an internal network, dubbed DARPA-NET, eventually became the foundation of the modern Internet.
Was I looking at the real me or just a reflection in the funhouse mirror of my prototype iPhone 6?
c.1600, from French prototype (16c.) and directly from Medieval Latin prototypus "original, primitive," from Greek prototypon "a first or primitive form," noun use of neuter singular of prototypos "original, primitive," from protos "first" (see proto-) + typos "impression, mold, pattern" (see type (n.)). In English from 1590s as prototypon.
prototype pro·to·type (prō'tə-tīp')
A primitive or ancestral form or species.