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：-ism, -ismus

【来源及含义】Greek, ismos; Latin, ismus: a suffix: belief in, practice of, condition of, process, characteristic behavior or manner, abnormal state, distinctive feature or trait

【同源单词】abaptism, abolitionism, abortionism, abrakophilism, absenteeism, absolutism

词根词缀：masto-, mast-, -mastia, -masty

【来源及含义】Greek: breast; the front of the human chest and either of two soft rounded organs on each side of the chest in women and men; however, with women the organs are more prominent and produce milk after childbirth; also, a milk-producing gland in mammals that corresponds to the human breast

【相关词根词缀】 Cross references of word families that are related, partially or totally, to: "breast, breasts, chest": mammill-; mammo-; mastoido-; mazo-; pectoro-; pleuro-; sterno-; stetho-; thorac-.

【同源单词】acromastitis, amastia, anisogynecomastia, anisomastia, bimastism, double mastectomy