Pro*ces"sion*a*ry (?), a. [Cf. LL. processionarius, F.
processionnaire.] Pertaining to a procession; consisting in
processions; as, processionary service.
Processionary moth (Zoˆl.), any moth of the genus Cnethocampa,
especially C. processionea of Europe, whose larvÊ make large webs on
oak trees, and go out to feed in regular order. They are covered with
stinging hairs.
Pro*ces"sion*er (?), n.