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Meaning of pyrheliometer

pyr•he•li•om•e•ter

Pronunciation: (pīr"hē-lē-om'i-tur, pir"-), [key]
— n. Astrophysics.
  1. an instrument for measuring the total intensity of the sun's energy radiation.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.