英语词源字典 - 在线词源网站

calcium [calcium 词源字典]: calcium: [19] Calcium was coined by the English chemist Sir Humphry Davy in 1808 on the basis of Latin calx ‘limestone’ (which is also the ancestor of English calcareous, calculate, calculus, causeway, and chalk). The Latin word probably came from Greek khálix, which meant ‘pebble’ as well as ‘limestone’.
=> calcarious, calculate, causeway, chalk[calcium etymology, calcium origin, 英语词源]
calculate: calculate: [16] Calculate comes from the past participial stem of the Latin verb calculāre, a derivative of the noun calculus, which meant ‘pebble’. This was almost certainly a diminutive form of Latin calx, from which English gets calcium and chalk. The notion of ‘counting’ was present in the word from ancient times, for a specialized sense of Latin calculus was ‘stone used in counting, counter’ (its modern mathematical application to differential and integral calculus dates from the 18th century).

Another sense of Latin calculus was ‘stone in the bladder or kidney’, which was its meaning when originally borrowed into English in the 17th century.
=> calcarious, calcium, calculus, causeway, chalk
calcareous (adj.): also calcarious, 1670s, from Latin calcarius "of lime," from calx (genitive calcis) "lime, limestone" (see chalk (n.)).