Spec`tro*he"li*o*gram` (?), n. [Spectrum + heloi- + -gram.] (Astrophysics)
A photograph of the sun made by monochromatic light, usually of the calcium line (k), and showing the sun's faculæ and prominences.
© Webster 1913
Log in or registerto write something here or to contact authors.
Need help? email@example.com