CET6 TEM4 IELTS GRE 考 研
- calcium:  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 (n.)
- coined 1808 by English chemist Sir Humphrey Davy (1778-1829), who first succeeded in isolating it, from Latin calx (genitive calcis) "limestone" (see chalk (n.)) + metallic element ending -ium.
- 1. Be sure you get your daily quota of calcium.
- 2. Calcium may aid in the prevention of colon cancer.
- 3. Milk products are an excellent source of calcium and protein.
- 4. Calcium is excreted in the urine and stools.
- 5. Calcium reacts with water.
[ calcium 造句 ]