Bible Dictionaries
Monomania

Webster's Dictionary

(n.) Derangement of the mind in regard of a single subject only; also, such a concentration of interest upon one particular subject or train of ideas to show mental derangement.

Bibliography Information
Webster, Noah. Entry for 'Monomania'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​m/monomania.html. 1828.