征候学 zhēnghòuxué symptomatology Origin Definitions Defs Strokes Stroke Words Sentences Sents 征候 徵候 zhēnghòu sign a sign, indication, or symptom; various signs that appear before an event occurs学 學 xué nounaffix branch of learning (bound form) a subject or branch of study; often used as a suffix for -logy, -ics, or -science