A combining form from the Gr. &unr_;, an idea. [ 1913 Webster ]

a. Of or relating to ideology. [ 1913 Webster ]

n. [ Ideo- + -geny, from the same root as Gr. &unr_;, birth: cf. F. idéogénie. ] The science which treats of the origin of ideas. [ 1913 Webster ]

n. [ Ideo- + -gram; cf. F. idéograme. ] 1. An original, pictorial element of writing; a kind of hieroglyph expressing no sound, but only an idea. [ 1913 Webster ]

Ideograms may be defined to be pictures intended to represent either things or thoughts. I. Taylor (The Alphabet). [ 1913 Webster ]

You might even have a history without language written or spoken, by means of ideograms and gesture. J. Peile. [ 1913 Webster ]

2. A symbol used for convenience, or for abbreviation; as, 1, 2, 3, +, -, &unr_;, $, &unr_;, etc. [ 1913 Webster ]

3. A phonetic symbol; a letter. [ 1913 Webster ]

n. Same as Ideogram.

{ } a. [ Cf. F. idéographique. ] Of or pertaining to an ideogram; representing ideas by symbols, independently of sounds; as, 9 represents not the word “nine, ” but the idea of the number itself. -- I`de*o*graph"ic*al*ly, adv. [1913 Webster]

n. The system of writing in ideographic characters; also, anything so written. [ 1913 Webster ]

n. The representation of ideas independently of sounds, or in an ideographic manner, as sometimes is done in shorthand writing, etc. [ 1913 Webster ]

a. [ Cf. F. idéologique. ] Of or pertaining to ideology. [ 1913 Webster ]

adj. concerned with or suggestive of ideas; as, an ideologic argument.
Syn. -- ideological. [ WordNet 1.5 ]