vestiarian UK /ˌvɛs.tɪˈɛəɹi.ən/US /ˌvɛs.tɪˈɛɹi.ən/noun 2adjective 1forms 1 noun2 •(historical) During the vestiarian controversy, a supporter of the wearing of vestments by the clergy (as opposed to an anti-vestiarian who considered the wearing of vestments a form of idolatry).Throughout his even career of promotion there is only one single wayward note [the signing of the petition for leniency toward the vestiarians at Cambridge in 1566 —see abte., ppp. 15-16] — 1949 •A member of a monastery responsible for making, caring for, and distributing habits.When, every six weeks or so, there was a great 'wash' of some part of the habit, the vestiarians had to ensure that each garment was properly dealt with before being put carefully away. — 2016 adjective1 •Of or pertaining to a vestiary or vestments.The Puritan threat—indeed the term "Puritan" itself—emerged outside of Parliament during the vestiarian controversy of the mid-1560s. — 1990 formsvestiarians