[ ak-tin-ee-uh ]
/ ækˈtɪn i ə /

noun, plural ac·tin·i·ae [ak-tin-ee-ee] /ækˈtɪn iˌi/, ac·tin·i·as.

a sea anemone, especially of the genus Actinia.

Origin of actinia

From New Latin, dating back to 1740–50; see origin at actin-, -ia Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for actinia

British Dictionary definitions for actinia


/ (ækˈtɪnɪə) /

noun plural -tiniae (-ˈtɪnɪˌiː) or -tinias

any sea anemone of the genus Actinia, which are common in rock pools

Word Origin for actinia

C18: New Latin, literally: things having a radial structure. See actino-, -ia
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012