(astronomy) A faint galaxy, devoid of gas, having a higher than normal proportion of dark matter; especially those that orbit the Milky Way and Andromeda

plural of dwarf spheroidal galaxy

(organic chemistry) A particular carotenoid.

(organic chemistry) The carotenoid ketone (4E,6E,8E,10E,12E,14E,16E,18E,20E,22E,26E)-2-methoxy-2,6,10,14,19,23,27,31-octamethyldotriaconta-4,6,8,10,12,14,16,18,20,22,26,30-dodecaen-3-one

plural of spheroidite

A soft, ductile form of carbon steel producing by heating under certain conditions, and having a structure of rods or spheres of cementite within the primary structure.

(pathology) That produces spheroidal cells (typical of some cancers)

(biochemistry) A protein present on the surface of some poxviruses