a telescope with a divided, adjustable objective, formerly used to measure small angular distances, as those between celestial bodies.
Origin of heliometer
Related formshe·li·o·met·ric [hee-lee-uh-me-trik] /ˌhi li əˈmɛ trɪk/, he·li·o·met·ri·cal, adjectivehe·li·o·met·ri·cal·ly, adverb
First recorded in 1745–55; helio-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for heliometer
Historical Examples of heliometer
In 1824 the great Knigsberg heliometer was commenced, and it was completed in 1829.
To sum up briefly the history of the development of the heliometer.
There are three methods in which this heliometer can be used.
He also invented a heliometer, afterwards perfected by Fraunhofer.
But there is one instrument of great value, the heliometer, which is not used at Greenwich.
British Dictionary definitions for heliometer
Derived Formsheliometric (ˌhiːlɪəʊˈmɛtrɪk) or heliometrical, adjectiveheliometrically, adverbheliometry, noun
a refracting telescope having a split objective lens that is used to determine very small angular distances between celestial bodies
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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