extremely small synonym tiny极小的;微量的 infinitesimal traces of poison 微量毒素 an infinitesimal risk 微乎其微的风险
Word Originmid 17th cent.: from modern Latin infinitesimus, from Latin infinitus, from in- ‘not’ + finitus ‘finished, finite’, past participle of finire, from finis ‘end’, on the pattern of centesimal.