adventitious
131ad|ven|ti|ti|a — «AD vehn TIHSH ee uh», noun. a membranous structure covering but not properly belonging to an organ, especially a blood vessel. ╂[< Latin adventīcia, neuter plural of adventīcius; see etym. under adventitious (Cf. ↑adventitious)] …
132Accidental — Ac ci*den tal, a. [Cf. F. accidentel, earlier accidental.] 1. Happening by chance, or unexpectedly; taking place not according to the usual course of things; casual; fortuitous; as, an accidental visit. [1913 Webster] 2. Nonessential; not… …
