— coronagraphic /keuh roh'neuh graf"ik/ , adj.
/keuh roh"neuh graf', -grahf'/ , n. Astron.
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 .
[ 1885-90; earlier coronograph. See CORONA, -GRAPH ]