prōˈpa(a)rēə noun plural
Usage: capitalized
Etymology: New Latin, from pro- (I) + Greek pareia cheek, cheekpiece of a helmet, probably from para- + -eia (akin to Greek ous ear) — more at ear
: an order of trilobites in which the posterior branch of the facial suture cuts the lateral margin of the cephalon
• pro·par·i·an -ēən noun or adjective