photoheliograph

[foh-tuh-hee-lee-uh-graf, -grahf]

noun Astronomy.

an instrument for photographing the sun, consisting of a camera and a specially adapted telescope.

Origin of photoheliograph

First recorded in 1860–65; photo- + heliograph

Also called heliograph.

Related formspho·to·he·li·o·graph·ic

[foh-tuh-hee-lee-uh-graf-ik] /ˌfoʊ təˌhi li əˈgræf ɪk/, adjectivepho·to·he·li·og·ra·phy

[foh-tuh-hee-lee-og-ruh-fee] /ˌfoʊ təˌhi liˈɒg rə fi/, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018