Merriam-Webster Collegiate Dictionary - conventual

 I. adjective  Etymology: Middle English, from Anglo-French or Medieval Latin; Anglo-French conventuel, from Medieval Latin ~is, from conventus convent  Date: 15th century  1. of, relating to, or befitting a convent or monastic life ; monastic  2. capitalized of or relating to the Conventuals  • ~ly adverb  II. noun  Date: 1533  1. capitalized a member of the Order of Friars Minor Conventual forming a branch of the first order of St. Francis of Assisi under a mitigated rule  2. a member of a ~ community