An Etymological Dictionary of Astronomy and Astrophysics

A species of atom characterized by the constitution of its nucleus, i.e. by the numbers of protons and neutrons it contains.

Etymology (EN): From nucl(eo), → nucleus,

• -ide, from Gk. eidos “shape.”

Etymology (PE): Hastevâr, from hasté, → nucleus, + -vâr a suffix meaning “resembling, like,” from Mid.Pers. -wâr, Av. -vara, -var, cf. Skt. -vara.