Share this entry

coronagraph Syllabification: co·ro·na·graph
Pronunciation: /kəˈrōnəˌɡraf/

Definition of coronagraph in English:


An instrument that blocks out light emitted by the sun’s actual surface so that the corona can be observed.
Example sentences
  • In other words, a coronagraph produces an artificial solar eclipse.
  • Their coronagraph - which created a false eclipse by blocking the visible disk of the Sun from the field of view - allowed them to spy on the solar atmosphere.
  • In addition to its suite of cameras, Skylab was stocked with tons of scientific equipment, including coronagraphs, spectrometers, and ultraviolet and X-ray telescopes.

Definition of coronagraph in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day confidant
Pronunciation: ˈkɒnfɪdant
a person with whom one shares a secret...