Etymology
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obviate (v.)

1590s, "to meet and dispose of, clear (something) out of the way," from Late Latin obviatus, past participle of obviare "act contrary to, go against," from Latin obvius "that is in the way, that moves against," from obviam (adv.) "in the way," from ob "in front of, against" (see ob-) + viam, accusative of via "way" (see via). Related: Obviated; obviating.

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obviation (n.)

c. 1400, obviacioun "encounter, contact; exposure," from Medieval Latin obviationem (nominative obviatio), noun of action from past-participle stem of obviare "act contrary to, go against" (see obviate).

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