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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.


(ˈspaɪrəˌɡrɑːf; -ˌɡræf)
(Medicine) med an instrument for recording the movements of breathing
ˌspiroˈgraphic adj
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.spirograph - a measuring instrument for recording the depth and rapidity of breathing movements
measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something
References in periodicals archive ?
For adult coloring book lovers and older children, included in the art library are almost 350 intricate Mandalas, complex patterns, spirographs, and geometric shapes that can be colored perfectly online with millions of colors, or printed on paper and colored with pencils or crayons.
Acceptable measures include adequate start and completion of test with age-appropriate effort by the child, a tight seal around the mouthpiece, and three acceptable spirographs with similar results (Miller et al.
I can't make up my mind if I like the proposed building or not, spirographs and all.