An Etymological Dictionary of Astronomy and Astrophysics

A subtype of classical → Cepheid variable stars that show a bump on the descending branch of their → light curve.

Etymology (EN): Bump “a relatively abrupt convexity or bulge on a surface,” probably imitative of the sound of a blow; → Cepheid.

Etymology (PE): Quzdâr, from quz “hump,” variant of kuž,
→ convex, + -dâr “possessing,” from dâštan “to have, possess.” Zokdâr, from Lori zok “a raised spot, a bulge,” cf. Northern Fârs Âbâdé dialect lok " swellimg, knob;" Kefeusi, → Cepheid.