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Origin of carat
Origin of karat
Examples from the Web for carat
This tea caddy is rather splendid Much of the pottery is gilded in 22 carat gold leaf.
The largest D color flawless diamond ever auctioned, the 101.73 carat jewel is expected to fetch at least $20 million.
"I think it's we who are not '18 carat,'" he answered furiously.What Timmy Did|Marie Adelaide Belloc Lowndes
The exact weight of the carat, in practice, now varies slightly in different places.
And at this instant Mr. Carat entered the shop, bowing and apologizing to his lordship for having been busy.Tales And Novels, Volume 1 (of 10)|Maria Edgeworth
The last of the three Imperial Mint Ordinances prescribed gold gulden 72 to the mark, 18 1⁄2 carat fine.The History of Currency, 1252 to 1896|William Arthur Shaw
So he tied above their best reach three strands of “carat” cord to the main rope.Bonaventure|George Washington Cable
Word Origin for carat
Word Origin for karat
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.
variant of carat (q.v.). In U.S., karat is used for "proportion of fine gold in an alloy" and carat for "weight of a precious stone."