‖Triv″i‐um (?), n. [LL. See Trivial.] 1. The three “ liberal” arts, grammar, logic, and rhetoric; — being a triple way, as it were, to eloquence.
☞ The trivium and quadrivium together made up the seven liberal arts. See Quadrivium.
2. (Zoöl.) The three anterior ambulacra of echinoderms, collectively.