n.
Pronunciation: p ə r- ' spek-tiv
Function: noun
Etymology: Middle English perspectyf, from Medieval Latin perspectivum, from neuter of perspectivus of sight, optical, from Latin perspectus, past participle of perspicere to look through, see clearly, from per- through + specere to look ― more at PER- , SPY
Date: 14th century
archaic : an optical glass (as a telescope)