Added 10 October 2026 pronymph noun Categories: Obscure Words noun ! Definition from Wiktionary (CC BY-SA). More about pronymph at Wordnik → Where our words come from → An arthropod hatchling still inside its embryonic cuticle, often specialized for breaking the eggshell or leaving the oviposition site; a prolarva. A prepupa with externally visible pupal traits. Origin From pro- + nymph. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: prolarvaprotonymphonprotonymphplanidiumprotaspidactinotrochaanaprotaspidpseudoproctprolegpilidiumprophragmapropleurum Back to today's word