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spirograph |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Spirograph \Spi"ro*graph\, n. [L. spirare to breathe + -graph.] (Physiol.) An instrument for recording the respiratory movements, as the sphygmograph does those of the pulse. From WordNet r 1.6 [wn]: spirograph n : an instrument for recording the depth and rapidity of breathing movements
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