等比 děngbǐ geometric ratio Definitions Defs Origin Strokes Stroke Words Sentences Sents 等比数列 děngbǐshùliè geometric progression; geometric sequence a sequence of numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio等比级数 děngbǐjíshù geometric series geometric series; geometric progression