Bible Dictionaries
Thallus

Webster's Dictionary

(n.) A solid mass of cellular tissue, consisting of one or more layers, usually in the form of a flat stratum or expansion, but sometimes erect or pendulous, and elongated and branching, and forming the substance of the thallogens.

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