Bible Dictionaries
Subaqueous

Webster's Dictionary

(1):

(a.) Being under water, or beneath the surface of water; adapted for use under water; submarine; as, a subaqueous helmet.

(2):

(a.) Formed in or under water; as, subaqueous deposits.

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