IDEOLOGICAL
I`de*o*log"ic*al, a. Etym: [Cf. F. idéologique.]

Defn: Of or pertaining to ideology.

IDEOLOGIST
I`de*ol"o*gist, n.

Defn: One who treats of ideas; one who theorizes or idealizes; one versed in the science of ideas, or who advocates the doctrines of ideology.

IDEOLOGY
I`de*ol"o*gy, n. Etym: [Ideo- + -logy: cf. F. idéologie.]

1. The science of ideas. Stewart.

2. (Metaph.)

Defn: A theory of the origin of ideas which derives them exclusively from sensation.

Note: By a double blunder in philosophy and Greek, idéologie . . . has in France become the name peculiarly distinctive of that philosophy of mind which exclusively derives our knowledge from sensation. Sir W. Hamilton.

IDEO-MOTION
I`de*o-mo"tion, n. (Physiol.)