trivium

Triv"i*um, n. Etym: [LL. See Trivial.] 1. The three " liberal" arts, grammar, logic, and rhetoric; -- being a triple way, as it were, to eloquence. Note: The trivium and quadrivium together made up the seven liberal arts. See Quadrivium. 2. (Zoöl.) Defn: The three anterior ambulacra of echinoderms, collectively.

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