9 Grammatical Pitfalls


[pahyuh r-hee-lee-om-i-ter, pir-] /ˌpaɪər hi liˈɒm ɪ tər, ˌpɪr-/
noun, Astrophysics.
an instrument for measuring the total intensity of the sun's energy radiation.
Origin of pyrheliometer
1860-65; pyr- + helio- + -meter
Related forms
[pahyuh r-hee-lee-uh-me-trik, pir-] /ˌpaɪər hi li əˈmɛ trɪk, ˌpɪr-/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for pyrheliometer
  • Each pyrheliometer compared consists of a sensing unit and a control unit.
  • The effect of cleaning the pyrheliometer window is evident from the change in direct normal irradiance prior to local solar noon.
  • Solar radiation incident on the sea surface is usually measured with a pyrheliometer.
British Dictionary definitions for pyrheliometer


an instrument for measuring the intensity of the sun's radiant energy
Derived Forms
pyrheliometric (pəˌhiːlɪəʊˈmɛtrɪk) adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
pyrheliometer in Science
An instrument used to measure the total amount of radiation from the Sun that hits a surface. It works by converting the Sun's heat into a voltage that is then recorded by a voltmeter.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for pyrheliometer

Few English speakers likely know this word

Word Value for pyrheliometer

Scrabble Words With Friends

Nearby words for pyrheliometer