heliometer

n. 量日化

发音

US

词形变化

heliometers 复数 heliometers

释义与例句

n.
  1. 1.

    An astronomical instrument, based on a telescope, for measuring the diameter of the sun; now used to measure the angular distance between stars and other celestial bodies.

词汇关系

名词

上位词 1

measuring device

词源

From helio- + -meter, from Ancient Greek Ἥλιος (Hḗlios), from ἥλιος (hḗlios, “sun”), and French mètre, from Ancient Greek μέτρον (métron, “measure”).

来源：wiktionary