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ther·mog·ra·phy

(thər-mŏgrə-fē)

n. pl. ther·mog·ra·phies

1. A process for producing raised lettering, as on stationery or calling cards, by application of a powder that is fused by heat to the fresh ink.

2. A technique in which an infrared camera is used to measure temperature variations on the surface of a structure or body part, used diagnostically to produce images that reveal sites of abnormal tissue growth.

ther′mo·graphic (-mə-grăfĭk) adj.

ther′mo·graphi·cal·ly adv.

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thermography

Thermographic image of a hippopotamus. Blues and greens indicate cooler body parts; oranges and reds indicate warmer body parts.

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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