spi·ro·graph (spī'rə-grāf') n. An instrument for registering the depth and rapidity of respiratory movements. spi'ro·graph'ic adj., spi'ro·graph'i·cal·ly adv., spi·rog'ra·phy (spī-rŏg'rə-fē) n.
Main Entry: spi·rog·ra·phy Pronunciation: spI-'räg-r&-fE Function: noun Inflected Form: plural-phies : therecording of respiratory movements by means of a spirograph
(spī'rə-grāf') 