Consult
early 16th century (in the sense ‘confer’): from French consulter, from Latin consultare, frequentative of consulere ‘take counsel’.
wiktionary
From Middle French consulter, from Latin cōnsultō(“to deliberate, consult”), frequentative of cōnsulō(“to consult, deliberate, consider, reflect upon, ask advice”), from com-(“together”) + -sulō, from Proto-Indo-European *selh₁-(“to take, grab”).
etymonline
consult (v.)
"ask advice of, seek the opinion of as a guide to one's own judgment," 1520s, from French consulter (16c.), from Latin consultare "consult, take the advice of," frequentative of consulere "to take counsel, meet and consider," originally probably "to call together," as in consulere senatum "to gather the senate" (to ask for advice), from Proto-Italic *kom-sel-e-, from *kom- "with, together" (see con-) + *sel-e- "take, gather together," from PIE root *s(e)lh- "to take" (said to be also the source of Middle Welsh dyrllid "to earn," Gothic saljan "to sacrifice," Old Norse selja "to sell, hand over"). Related: Consulted; consulting.