An Etymological Dictionary of Astronomy and Astrophysics

Suffix denoting “family of,” as in Andromedids, Aquarids, Bielids, Draconids, Geminids, Perseids, and so on.

Etymology (EN): Plural form of L. -id-, from -is, Gk. fem. patronymic suffix; or from L. -ides, from Gk. masc. patronymic suffix.

Etymology (PE): -iyân plural form of -i, suffix of relation, adjective + -y- euphonic infix (epenthesis) + -ân plural suffix, as in Haxâmanešiyân “Achaemenids,” Sâsâniyân “Sasanides,” and so on.