'astrolater' originates from New Latin/Late Latin, specifically the word 'astrolatria' or 'astrolat-,' where Greek 'astron' meant 'star' and Greek 'latreia' meant 'worship'.

'astrolater' developed via Late Latin/New Latin forms such as 'astrolatria' and Medieval/early Modern Latin 'astrolater' into the English noun 'astrolater'.

Initially, it meant 'one who worships the stars', and over time the meaning has remained essentially the same though the term has become rare and largely archaic in English.