词根词缀：acuto-, acut-, acuti-, acu-, -cusis; also, agu-

【来源及含义】Latin: sharp, to sharpen, point; needle, pin

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

【同源单词】acicula, acicular, acicular ice, aciculate, aciculate, aciculiform

词根词缀：angle, angu-

【来源及含义】Latin: a corner, a bend

【同源单词】acutangular, acute angle, angle, angle, angular, angularly

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