thermotype (plural thermotypes)
- An image (as for example of a slice of wood) obtained by first wetting the object slightly with an acid, then taking an impression with a press, and next strongly heating this impression.
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for thermotype in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)