Bible Dictionaries
Placoid

Webster's Dictionary

(1):

(n.) One of the Placoides.

(2):

(n.) Any fish having placoid scales, as the sharks.

(3):

(a.) Platelike; having irregular, platelike, bony scales, often bearing spines; pertaining to the placoids.

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