Merriam-Webster Collegiate Dictionary - trivial

 adjective  Etymology: Latin ~is found everywhere, commonplace, from trivium crossroads, from tri- + via way — more at way  Date: 1589  1. commonplace, ordinary  2.  a. of little worth or importance a ~ objection ~ problems  b. relating to or being the mathematically simplest case; specifically characterized by having all variables equal to zero a ~ solution to a linear equation  3. specific 4  • ~ist noun  • ~ly adverb