helium

Εννοια (Αγγλικός)

1. (uncountable) The second-lightest chemical element (symbol He), with an atomic number of 2 and atomic weight of 4.002602, a colorless, odorless and inert noble gas.
2. (countable) A form or sample of the element.

Έννοιες

ήλιο

ήλιον

ílio

Συνώνυμα

He

👨

atomic number 2

limnodium

swamp community

Μεταφράσεις

hélium

Helium

helio

elio

helium

hélio

heli

helyum

helium

هيليوم

hêlyûm

eli

helyûm

èli

Προφέρεται ως (IPA)

/ˈhiː.li.əm/

Ετυμολογία (Αγγλικός)

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. Probably coined by Norman Lockyer. This suffix is unusual, because it is usually used only for metallic elements. It is likely that Lockyer, being an astronomer, was unaware of the usual chemical conventions.