actinoid

[ak-tuh-noid]

Origin of actinoid

First recorded in 1840–50; actin- + -oid
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Examples from the Web for actinoid

Historical Examples of actinoid


British Dictionary definitions for actinoid

actinoid

adjective
  1. 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