— photoheliographic /foh'teuh hee'lee euh graf"ik/ , adj. — photoheliography /foh'teuh hee'lee og"reuh fee/ , n.
/foh'teuh hee"lee euh graf', -grahf'/ , n. Astron.
an instrument for photographing the sun, consisting of a camera and a specially adapted telescope. Also called heliograph .
[ 1860-65; PHOTO- + HELIOGRAPH ]