Etymology
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transversal (adj.)

"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.

updated on February 14, 2014

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Definitions of transversal from WordNet

transversal (adj.)
extending or lying across; in a crosswise direction; at right angles to the long axis;
transversal vibrations
Synonyms: cross / transverse / thwartwise
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.