Actinia acting • actinian · · · Info · Definitions · Synonyms · Characters · · Actinia · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a genus of sea anemone common in rock pools. Synonyms: genus Actinia. · · Noun Definition 1 (noun) any sea anemone or related animal. Synonyms: actinia, actinian, actiniarian. · · Noun Definition 2 Synonyms · · · actinian · · Synonym 1 actiniarian · · Synonym 2 Characters · · A latin capital letter a U+0041 a latin small letter a U+0061 c latin small letter c U+0063 i latin small letter i U+0069 n latin small letter n U+006E t latin small letter t U+0074