a telescope with a divided, adjustable objective, formerly used to measure small angular distances, as those between celestial bodies.
- he·li·o·met·ric [hee-lee-uh-me-trik], /ˌhi li əˈmɛ trɪk/, he·li·o·met·ri·cal, adjective
- he·li·o·met·ri·cal·ly, adverb
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How to use heliometer in a sentence
A rival method to that of the heliometer has been discovered in the photographic telescope.
On an entirely different plan is a survey just concluded by Chase with the Yale heliometer.
These require extension, because the differential methods of the heliometer and the camera cannot otherwise be made absolute.History of Astronomy | George Forbes
The heliometer is a telescope with its object-glass cut in half along a diameter.The Story of the Heavens | Robert Stawell Ball
The instrument he is to use should be that marvellous piece of mechanical and optical skill known as the heliometer.The Story of the Heavens | Robert Stawell Ball
British Dictionary definitions for heliometer
a refracting telescope having a split objective lens that is used to determine very small angular distances between celestial bodies
- heliometric (ˌhiːlɪəʊˈmɛtrɪk) or heliometrical, adjective
- heliometrically, adverb
- heliometry, noun
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