'Placoid' definitions:
Definition of 'placoid'
From: WordNet
adjective
As the hard flattened scales of e.g. sharks [syn: placoid, platelike]
Definition of 'Placoid'
From: GCIDE
- Placoid \Plac"oid\, a. [Gr. pla`x, plako`s, a tablet + -oid.] (Zool.) Platelike; having irregular, platelike, bony scales, often bearing spines; pertaining to the placoids. [1913 Webster]
Definition of 'Placoid'
From: GCIDE
- Placoid \Plac"oid\, n. (Zool.) (a) Any fish having placoid scales, as the sharks. (b) One of the Placoides. [1913 Webster]