heliometer

[ hee-lee-om-i-ter ]

noun

1. a telescope with a divided, adjustable objective, formerly used to measure small angular distances, as those between celestial bodies.

heliometer

/ ˌhiːlɪəʊˈmɛtrɪk; ˌhiːlɪˈɒmɪtə /

noun

1. a refracting telescope having a split objective lens that is used to determine very small angular distances between celestial bodies

Derived Forms

• ˌheliˈometry, noun
• ˌhelioˈmetrically, adverb
• heliometric, adjective

Other Words From

• he·li·o·met·ric [hee-lee-, uh, -, me, -trik], heli·o·metri·cal adjective
• heli·o·metri·cal·ly adverb

Word History and Origins

Origin of heliometer¹

First recorded in 1745–55; helio- + -meter

Example Sentences

A rival method to that of the heliometer has been discovered in the photographic telescope.

From Project Gutenberg

On an entirely different plan is a survey just concluded by Chase with the Yale heliometer.

From Project Gutenberg

These require extension, because the differential methods of the heliometer and the camera cannot otherwise be made absolute.

From Project Gutenberg

The heliometer is a telescope with its object-glass cut in half along a diameter.

From Project Gutenberg

The instrument he is to use should be that marvellous piece of mechanical and optical skill known as the heliometer.

From Project Gutenberg