Définitions
1.NounAn apparatus for signalling by means of a moveable mirror which reflects flashes of sunlight.
2.NounA heliogram.
3.NounAn instrument for measuring the intensity of sunlight.
4.NounA device for photographing the sun.
5.NounA photograph.
6.VerbTo send a message by heliograph.
7.VerbTo send a heliograph.
8.VerbTo photograph by sunlight.
9.VerbTo message or indicate as though by heliograph.