-ide definition

<suffix>

1. <chemistry> A suffix used to form nouns denoting binary compounds of an element (the suffix -ide being added to the abbreviated name of the more electronegative element etc.) (sodium chloride; lead sulphide; calcium carbide).

2. A suffix to various other compounds (amide; anhydride; peptide; saccharide).

3. A suffix used to form elements of a series in the periodic table (actinide; lanthanide).

Origin: originally in oxide

(06 Feb 2009)

<suffix>

1. <chemistry> A combining form or suffix that denotes the nonmetallic, or negative, element or radical in a binary compound; (the suffix -ide being added to the abbreviated name of the more electronegative element etc.) (sodium chloride; lead sulphide; calcium carbide).

A compound which is an anhydride; as, glycolide, phthalide. Any one of a series of derivatives; as, indogenide, glucoside, etc.

2. A suffix to various other compounds (amide; anhydride; peptide; saccharide).

3. A suffix used to form elements of a series in the periodic table (actinide; lanthanide).

Origin: originally in oxide

(29 Oct 1998)