coronograph

[ kuh-roh-nuh-graf, -grahf ]

noun

, Astronomy.

1. coronagraph.

Other Words From

• co·ro·no·graph·ic [k, uh, -roh-n, uh, -, graf, -ik], adjective

Word History and Origins

Origin of coronograph¹

First recorded in 1880–85

Example Sentences

Moving to the telescope mount's coronograph�which blocks out the light from the sun's disk, thereby creating an artificial eclipse that allows scientists to study the solar corona, or outer halo of gases�Conrad showed a more delicate touch: he wiped away a piece of thread that had mysteriously settled on the instrument's lens.

From Time Magazine Archive