radiometer

noun

ra·​di·​om·​e·​ter ˌrā-dē-ˈä-mə-tər 

: an instrument for detecting and usually for measuring the intensity of radiant energy

radiometry

ˌrā-dē-ˈä-mə-trē 

noun

Illustration of radiometer

Examples of radiometer in a Sentence

Recent Examples on the Web

Mariner 9 carried four primary instruments to study Mars, including a camera system for imaging, an ultraviolet spectrometer, an infrared spectrometer and an infrared radiometer. — Tariq Malik, Space.com, 13 Nov. 2026

The satellite will also use cutting-edge RF-System-on-Chip (RFSoC) technology to power its miniature radiometer. — Mrigakshi Dixit, Interesting Engineering, 14 Aug. 2026

Juno also has a magnetometer, a gravity science system and a microwave radiometer. — Jamie Carter, Forbes.com, 22 May 2025

Juno has other instruments too, including a magnetometer to map Jupiter's magnetic field and a microwave radiometer to measure the abundance of water and ammonia in the planet's atmosphere. — Thomas G. Moukawsher, Newsweek, 6 Nov. 2024

Word History

First Known Use

1875, in the meaning defined above

Rhymes for radiometer

• barometer
• chronometer
• geometer
• hydrometer
• hygrometer
• kilometer
• micrometer
• odometer
• photometer
• psychrometer
• pycnometer
• pyrometer

Kids Definition

radiometer

noun

ra·​di·​om·​e·​ter ˌrād-ē-ˈäm-ət-ər 

: an instrument for measuring the strength of radiant energy

radiometric

ˌrād-ē-ō-ˈme-trik

adjective

radiometry

-ˈäm-ə-trē 

noun

Medical Definition

radiometer

noun

ra·​di·​om·​e·​ter ˌrād-ē-ˈäm-ət-ər 

: an instrument for measuring the intensity of radiant energy

also : an instrument for measuring electromagnetic radiation or sound waves