Found 2 items, similar to placoid.
English → English (WordNet) Definition: placoid placoid adj : as the hard flattened scales of e.g. sharks [syn: platelike]
English → English (gcide) Definition: Placoid Placoid \Plac"oid\, a. [Gr. pla`x, plako`s, a tablet + -oid.] (Zo["o]l.) Platelike; having irregular, platelike, bony scales, often bearing spines; pertaining to the placoids. [1913 Webster] Placoid \Plac"oid\, n. (Zo["o]l.) (a) Any fish having placoid scales, as the sharks. (b) One of the Placoides. [1913 Webster]