prototype

n. 1 original as a pattern for imitations, improved forms, representations, etc. 2 trial model or preliminary version of a vehicle, machine, etc.  prototypic adj. Prototypical adj. [greek: related to *proto-]

n. An original or model after which anything is copied; the pattern of anything to be engraved, or otherwise copied, cast, or the like; a primary form; exemplar; archetype.