coronagraph

or co·ro·no·graph

[ kuh-roh-nuh-graf, -grahf ]
/ kəˈroʊ nəˌgræf, -ˌgrɑf /

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.

Nearby words

  1. corona radiata,
  2. coronach,
  3. coronado,
  4. coronado, francisco,
  5. coronado, francisco vásquez de,
  6. coronal,
  7. coronal hole,
  8. coronal mass ejection,
  9. coronal plane,
  10. coronal suture

Origin of coronagraph

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

Related formsco·ro·na·graph·ic [kuh-roh-nuh-graf-ik] /kəˌroʊ nəˈgræf ɪk/, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for coronagraph

coronagraph

coronograph

/ (kəˈrəʊnəˌɡrɑːf, -ˌɡræf) /

noun

an optical instrument used to simulate an eclipse of the sun so that the faint solar corona can be studied
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012