词根词缀：bi-, bin-, bino-, bis-

【来源及含义】Latin: two, twice, double, twofold; a number; it normally functions as a prefix

【相关描述】This bi- is used before s, c, or a vowel. Don't confuse this bi- with another one which means "life".

All words except biennial referring to periods of time and prefixed by bi- are potentially ambiguous. Since bi- can be taken to mean either "twice each" or "every two", a word like "biweekly" can be understood as "twice each week" or "every two weeks".

【同源单词】biacid, biangular, biannual, biannual, biarchy, biarticulate

词根词缀：-ular

【来源及含义】Latin: of, relating to, or resembling; compound of the suffixes -ule, "little, small" and -ar, "pertaining to, of the nature of, like"; and so, -ular is a combining form meaning: referring to something "specified": appendicular, molecular, pedicular; as well as, a combining form meaning "resembling" something specified: circular, globular, tubular

【同源单词】abarticular, acellular, acicular ice, acinotubular, acromioclavicular, acutangular

词根词缀：valvulo-, valvul-

【来源及含义】Latin: a doorlike structure in a passageway that hinders or prevents the reflux or flowing back of its contents

【同源单词】bivalve, bivalved, bivalvular, cardiovalvulitis, equivalve, equivalvular