The Collaborative International Dictionary
Rheostat \Rhe"o*stat\ (r[=e]"[-o]*st[a^]t), n. [Gr. "rei^n +
stato`s standing still.] (Elec.)
A contrivance for adjusting or regulating the strength of
electrical currents, operating usually by the intercalation
of resistance which can be varied at will.
--Wheatstone.
-- Rhe`o*stat"ic, a.
Wiktionary
a. 1 regulated using a rheostat 2 (context biochemistry English) Of or pertaining to rheostasis
Usage examples of "rheostatic".
By the mid-1960s, most subliminals in television commercials were implanted with rheostatic photography.
Everyone has seen a rheostatic control for a lamp or overhead light: by turning it, one can make the light dimmer or brighter.
Wherever the computer prints 'This Legend' it means that the visual subliminals have been interrupted by a block-letter message on the rheostatic film, a direct command to the viewer.