Sanakirja.org

Määritelmät

Substantiivit

1. (physics, sometimes) Any helium ion, the nucleus of any helium atom.
2. (astronomy) A meteoroid that arrives from the approximate direction of the Sun.
3. (physics, usually) A helium-3 ion, the nucleus of a helium-3 atom. Formula: ³He¹⁼⁺².