Bible Dictionaries
Siredon

Webster's Dictionary

(n.) The larval form of any salamander while it still has external gills; especially, one of those which, like the axolotl (Amblystoma Mexicanum), sometimes lay eggs while in this larval state, but which under more favorable conditions lose their gills and become normal salamanders. See also Axolotl.

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