[seer-oh] 
) -ro, (especially referring to two or more kinds or species) -ros. | 1. | a large Atlantic and Gulf Coast mackerel game fish, Scomberomorus regalis. |
| 2. | any of various related fishes. |
| a combining form meaning “wax,” used in the formation of compound words: cerotype. |
| ce·ro (sîr'ō, sěr'ō) n. pl. ce·ros or cero An edible fish (Scomberomorus regalis) of western Atlantic waters, having silvery sides and a dark-blue back. Also called sierra. [Alteration of Spanish sierra, saw, sawfish; see sierra.] |