An archaic or alternative form of 'astrologer,' a person who practices astrology or claims to predict the future by studying celestial bodies.
From 'astro-' (star) + '-log' (one who speaks/studies, from Greek 'logos'). This shortened form appears in Middle English and Early Modern English texts but 'astrologer' became the standard term.
Medieval English texts use 'astrolog' before 'astrologer' became standard—language evolution works by competing variants where one form 'wins,' and in this case the longer, more satisfying-sounding 'astrologer' defeated its shorter cousin!
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