'apollinarist' originates from Modern Latin, specifically the word 'Apollinaris' (a personal name), combined with the suffix '-ist' indicating 'follower'. 'Apollinaris' itself is derived from the name 'Apollo' and meant 'of or belonging to Apollo.'

'apollinarist' changed from Medieval/Latin forms such as 'Apollinarista' (used to denote a follower of Apollinaris or his teachings) and eventually became the modern English word 'apollinarist'.

Initially, it referred specifically to a follower of the historical figure Apollinaris; over time the usage broadened to mean a supporter of the doctrinal position called Apollinarism.