- transversal (adj.)
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[transversal 词源字典] - "running or lying across," mid-15c., from Medieval Latin transversalis (13c.), from transvers-, stem of transvertere (see transverse). Earlier in the same sense was transversary (c. 1400). As a noun, from 1590s. Related: Transversally.[transversal etymology, transversal origin, 英语词源]