American Heritage Dictionary
(1)
Century Dictionary
(5)
GNU Webster's 1913
(1)
WordNet
(1)
Elsewhere on the web
"We believe this idea that T cell signaling acts more like a rheostat than an on / off switch offers significant new insights into how T cell development and function is controlled,"
To regulate the strength of the current a rheostat was placed in the circuit.— Fragments of science, V. 1-2
One wire runs to the switch, B, and the other connects with the water rheostat, which is used for reducing the current Illustration: Arc-Light Motor and Water Rheostat A tin can, C is filled nearly to the top with salt water, and a metal rod, D, is passed through a piece of wood fastened at the top of the can.— The Boy Mechanic: Volume 1 700 Things for Boys to Do
These iron contacts are connected with the divisions of a rheostat, R, arranged in a tight compartment surrounded with paraffine, near the tube This rheostat is interposed in the general circuit.— Scientific American Supplement, No. 598, June 18, 1887

Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word about twice a year.
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