a. [ Compar. Prosier superl. Prosiest. ] [ 1913 Webster ]
1. Of or pertaining to prose; like prose. [ 1913 Webster ]
2. Dull and tedious in discourse or writing; prosaic. [ 1913 Webster ]
n. [ Pref. pro- + syllogism. ] (Logic) A syllogism preliminary or logically essential to another syllogism; the conclusion of such a syllogism, which becomes a premise of the following syllogism. [ 1913 Webster ]