- asymptote (n.)
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[asymptote 词源字典] - "straight line continually approaching but never meeting a curve," 1650s, from Greek asymptotos "not falling together," from a- "not" + syn "with" + ptotos "fallen," verbal adjective from piptein "to fall" (see symptom). Related: Asymptotic.[asymptote etymology, asymptote origin, 英语词源]