actinoid

[ ak-tuh-noid ]
/ ˈæk təˌnɔɪd /
|

adjective

raylike; radiate.

Origin of actinoid

First recorded in 1840–50; actin- + -oid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for actinoid

British Dictionary definitions for actinoid

actinoid

/ (ˈæktɪˌnɔɪd) /

adjective

having a radiate form, as a sea anemone or starfish
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