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coronograph

 - 4 dictionary results

co⋅ro⋅no⋅graph

  [kuh-roh-nuh-graf, -grahf]
Use coronograph in a Sentence
–noun Astronomy.
coronagraph.
Origin:
1880–85

Related forms:
co⋅ro⋅no⋅graph⋅ic  [kuh-roh-nuh-graf-ik] , adjective

co⋅ro⋅na⋅graph

  [kuh-roh-nuh-graf, -grahf]
–noun Astronomy.
an instrument for observing and photographing the sun's corona, consisting of a telescope fitted with lenses, filters, and diaphragms that simulate an eclipse.
Also, coronograph.

Origin:
1885–90; earlier coronograph. See corona, -graph

Related forms:
co⋅ro⋅na⋅graph⋅ic  [kuh-roh-nuh-graf-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To coronograph
co·ro·na·graph also co·ro·no·graph   (kə-rō'nə-grāf')   
n.  A telescope or an attachment for a telescope equipped with a disk that blacks out most of the sun, used to photograph the sun's corona.
co·ro·no·graph   (kə-rō'nə-grāf')   
n.  Variant of coronagraph.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
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