isophote

noun
iso·​phote | \ ˈī-sə-ˌfōt How to pronounce isophote (audio) \

Definition of isophote

: a curve on a chart joining points of equal light intensity from a given source

Other Words from isophote

isophotal \ ˌī-​sə-​ˈfō-​təl How to pronounce isophotal (audio) \ adjective

First Known Use of isophote

circa 1909, in the meaning defined above

History and Etymology for isophote

International Scientific Vocabulary is- + -phote (from Greek phōt-, phōs light) — more at fancy

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The first known use of isophote was circa 1909

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