词根词缀：acid-, acidi-, acido-, -acidity

【来源及含义】Latin: sour [sharp]

【相关词根词缀】 Cross references of word families that are related directly, or indirectly, to: "sour, sharp": acerb-; acies- (not "sour"); acuto- (not "sour"); oxy-; pung- (not "sour").

【同源单词】acid, acid rain, acid test, acidalbumin, acidaminuria, acidemia

词根词缀：semi-

【来源及含义】Latin: half, partly, twice

【同源单词】semi-acid, semi-amplexicaul, semiannual, semiannually, semiaquatic, semiarid