neologism - a new word.
Project Persephone aims to keep its neologisms to the absolute minimum. A number of concepts - such as exovivaria (vivaria in space) and telebot (teleoperated robot) - nevertheless seem to cry out for some abbreviation.
This page may have a more recent version on pmwiki.org: PmWiki:Neologism, and a talk page: PmWiki:Neologism-Talk.