opalotype

English

Etymology

From opal +‎ -o- +‎ -type.

Noun

opalotype (plural opalotypes)

1. (historical, photography) A photograph taken on opalescent glass.

References

• “opalotype”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.