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actinomorphic
actinomycete
actinomycin
actinomycosis
actinopterygian
actinouranium
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actinian
ac·tin·i·an [ ak tínnee ən ]


noun 
Definition:
 
marine biology  ( technical )
Same as  sea anemone
[Late 19th century. < modern Latin Actinia< Greek aktin- "ray"]
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