Question

carat n. (宝石重量单位)克拉；(金子)开 carat (n.) also karat, mid-15c., from Middle French carat "measure of the fineness of gold" (14c.), from Italian carato or Medieval Latin carratus, both from Arabic qirat "fruit of the carob tree," also "weight of 4 grains," from Greek keration "carob seed," also the name of a small weight of measure (one-third obol), literally "little horn" diminutive of keras "horn" (see kerato-).Carob beans were a standard for weighing small quantities. As a measure of diamond weight, from 1570s in English. The Greek measure was the equivalent of the Roman siliqua, which was one-twentyfourth of a golden solidus of Constantine; hence karat took on a sense of "a proportion of one twentyfourth" and became a measure of gold purity (1550s). Eighteen carat gold is eighteen parts gold, six parts alloy. It is unlikely that the classical carat ever was a measure of weight for gold. 【记】译音:克拉

Accepted Answer

['kærət] 【同】 近形词：karate(空手 道)，caret(加字符号) n. (宝石重量单位 = 200毫克)克拉; 开(黄金纯度单位, 纯金为24开, 音译词)【参】karate(n 空手道), caret(n 加字符号)

单词	carat
音标	['kærət]
解释	n. (宝石重量单位)克拉；(金子)开
红宝书	【同】近形词：karate(空手道)，caret(加字符号)
字源	carat (n.) also karat, mid-15c., from Middle French carat "measure of the fineness of gold" (14c.), from Italian carato or Medieval Latin carratus, both from Arabic qirat "fruit of the carob tree," also "weight of 4 grains," from Greek keration "carob seed," also the name of a small weight of measure (one-third obol), literally "little horn" diminutive of keras "horn" (see kerato-). Carob beans were a standard for weighing small quantities. As a measure of diamond weight, from 1570s in English. The Greek measure was the equivalent of the Roman siliqua, which was one-twentyfourth of a golden solidus of Constantine; hence karat took on a sense of "a proportion of one twentyfourth" and became a measure of gold purity (1550s). Eighteen carat gold is eighteen parts gold, six parts alloy. It is unlikely that the classical carat ever was a measure of weight for gold.
不择手段背单词	n. (宝石重量单位 = 200毫克)克拉; 开(黄金纯度单位, 纯金为24开, 音译词) 【参】karate(n 空手道), caret(n 加字符号)
趣味全助记	【记】译音:克拉

Carat Measure N Carob Greek Small Weight Gold