Bible Dictionaries
Thermotype

Webster's Dictionary

(n.) A picture (as of a slice of wood) obtained by first wetting the object slightly with hydrochloric or dilute sulphuric acid, then taking an impression with a press, and next strongly heating this impression.

Bibliography Information
Webster, Noah. Entry for 'Thermotype'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​t/thermotype.html. 1828.