actiniform

[ak-tin-uh-fawrm]

ac·tin·i·form

[ak-tin-uh-fawrm]
adjective Zoology.
having a radiate form.

Origin:
1835–45; actin- + -i- + -form
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Actiniform is always a great word to know.
So is invertebrate. Does it mean:
pertaining to creatures without a backbone
phylum of radially symmetrical coelomate marine invertabrates
Collins
World English Dictionary
actiniform (ækˈtɪnɪˌfɔːm)
 
adj
another word for actinoid
 
[C20: from actino- + -form]

Collins English Dictionary - Complete & Unabridged 10th Edition
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