钙
gài · HSK 7
calcium
🦴 钙 = 钅(metal radical) + 丐 (beggar, phonetic gài)
The 钅radical marks it as a metallic element; 丐 (gài, beggar) supplies the sound. Calcium is the metal in bones and milk — atomic number 20.
钙 — metal radical 钅 + 丐 (gài, beg)
A modern semantic-phonetic compound coined for the chemical element calcium. The metal radical 钅 marks it as a metal, while 丐 (gài) supplies the sound. Like most element names (钠, 镁, 铁), it was created in the 19th–20th century to render Western chemistry into Chinese.