English word heliometry comes from English -metry (Forming nouns relating to measures and measurement.), English helio- (Concerning the sun.)
Dictionary entry | Language | Definition |
---|---|---|
-metry | English (eng) | Forming nouns relating to measures and measurement. |
helio- | English (eng) | Concerning the sun. |
heliometry | English (eng) | The measurement of the diameters of heavenly bodies, their relative distances, etc. |