sea star

1. 1.

   echinoderms characterized by five arms extending from a central disk

   Synonymsstarfish

   Broaderechinoderm

   Part ofAsteroidea

Questions about sea star

What does sea star mean?

sea star means "echinoderms characterized by five arms extending from a central disk".

What is another word for sea star?

Close synonyms include starfish. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is sea star a common word?

sea star is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.