a suffix of nouns that have the general sense “offspring of, descendant of,” occurring originally in loanwords from Greek (Atreid; Nereid ), and productive in English on the Greek model, especially in names of dynasties, with the dynasty's founder as the base noun (Abbasid; Attalid ), and in names of periodic meteor showers, with the base noun usually denoting the constellation or other celestial object in which the shower appears (Perseid ).

< Latin -id-, stem of -is < Greek: feminine patronymic suffix; or < Latin -idēs < Greek: masculine patronymic suffix

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a suffix occurring in English derivatives of modern Latin taxonomic names, especially zoological families and classes; such derivatives are usually nouns denoting a single member of the taxon or adjectives with the sense “pertaining to” the taxon: arachnid; canid .

< Greek -idēs -id1, as singular of Neo-Latin -ida -ida or -idae -idae


variant of -ide: lipid .


a suffix occurring in descriptive adjectives borrowed from Latin, often corresponding to nouns ending in -or1, : fetid; humid; pallid .

< Latin -idus

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World English Dictionary
suffix forming nouns
1.  indicating the names of meteor showers that appear to radiate from a specified constellation: Orionids (from Orion)
2.  indicating a particle, body, or structure of a specified kind: energid
[from Latin -id-, -is, from Greek, feminine suffix of origin]

suffix forming adjectives, —suffix forming nouns
1.  indicating members of a zoological family: cyprinid
2.  indicating members of a dynasty: Seleucid; Fatimid
[from New Latin -idae or -ida, from Greek -idēs suffix indicating offspring]

suffix forming nouns
a variant of -ide

-ide or -id
suffix forming nouns
1.  (added to the combining form of the nonmetallic or electronegative elements) indicating a binary compound: sodium chloride
2.  indicating an organic compound derived from another: acetanilide
3.  indicating one of a class of compounds or elements: peptide; lanthanide
[from German -id, from French oxideoxide, based on the suffix of acideacid]
-id or -id
suffix forming nouns
[from German -id, from French oxideoxide, based on the suffix of acideacid]

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Medical Dictionary

-id suff.
Body; particle: chromatid.

The American Heritage® Stedman's Medical Dictionary
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