Word Study
[2x]
: Pâ Pæ Pè Pé Pœ P- P. P/ P< Pa Pb Pc Pd Pe Pf Ph Pi Pj Pk Pl Pm Pn Po Pp Pr Ps Pt Pu Pv Pw Px Py
placoid
CIDE DICTIONARY
placoid, a. [Gr. pla`x, plako`s, a tablet + -oid.].
Platelike; having irregular, platelike, bony scales, often bearing spines; pertaining to the placoids. [1913 Webster]
placoid, n.
Any fish having placoid scales, as the sharks. [1913 Webster]
OXFORD DICTIONARY
placoid, adj. & n.
--adj.
1 (of a fish-scale) consisting of a hard base embedded in the skin and a spiny backward projection (cf. CTENOID).
2 (of a fish) covered with these scales.
--n. a placoid fish, e.g. a shark.
--adj.
1 (of a fish-scale) consisting of a hard base embedded in the skin and a spiny backward projection (cf. CTENOID).
2 (of a fish) covered with these scales.
--n. a placoid fish, e.g. a shark.
Etymology
Gk plax plakos flat plate
For further exploring for "placoid" in Webster Dictionary Online
