-ID

suffix forming nouns denoting: 1 Zool. an animal belonging to a family with a name in -idae or a class with a name in -ida (canid; arachnid). 2 a member of a person's family (Seleucid from Seleucus). 3 Astron. a a meteor in a group radiating from a specified constellation (Leonid from Leo). b a star of a class like one in a specified constellation (cepheid). [from or after L -ides, pl. -idae or -ida]