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helion

noun — 3 senses

helion

noun

Etymology From helium + -on.

1

Natural sciences, Physical sciences, Physics Sometimes Any helium ion, the nucleus of any helium atom.

2

Natural sciences, Physical sciences, Physics Sometimes, Usually A helium-3 ion, the nucleus of a helium-3 atom. Formula: ³He⁺².

Derived terms
antihelion

helion

noun
1

Astronomy, Natural sciences A meteoroid that arrives from the approximate direction of the Sun.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.