无限小 wúxiànxiǎo infinitesimal Definitions Defs Origin Strokes Stroke Words Sentences Sents 无限 無限 wúxiàn adjective infinite limitless; unbounded; having no end or boundary小 xiǎo adjective small small; tiny; few; minor; in area, volume, quantity, or power, being less than average or less than the object of comparison; opposite of 大 dà