Helium
来自Big Physics
late 19th century: modern Latin, from Greek hēlios ‘sun’, because its existence was inferred from an emission line in the sun's spectrum.
wiktionary
From New Latin helium, from Ancient Greek ἥλιος(hḗlios, “sun”) (because its presence was first theorised in the Sun's atmosphere) with the suffix + -ium.
etymonline
helium (n.)
1868, coined from Greek hēlios "sun" (from PIE root *sawel- "the sun"), because the element was detected in the solar spectrum during the eclipse of Aug. 18, 1868, by English astronomer Sir Joseph N. Lockyer (1836-1920) and English chemist Sir Edward Frankland (1825-1899). It was not actually obtained until 1895; before then it was assumed to be an alkali metal, hence the ending in -ium.
