noun, verb, he·li·o·typed, he·li·o·typ·ing.
Origin of heliotype
Examples from the Web for heliotype
I have, therefore, had six of them (Plate I.) reproduced by the heliotype process.
All these photographs have been printed by the Heliotype process, and the accuracy of the copy is thus guaranteed.
All of the photographs are similar to those which appear in heliotype, diminished in size, as illustrations of this paper.