|rādēō|me.trik adjective
Etymology: International Scientific Vocabulary radio- + -metric
1. : relating to, using, or measured by the radiometer
radiometric analysis
radiometric data
2. : of or relating to the measurement of geologic time by means of the rate of disintegration of radioactive elements
• ra·dio·met·ri·cal·ly -rə̇k(ə)lē adverb