| / English Dictionary |
ACTINOID
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
Any of a series of radioactive elements with atomic numbers 89 through 103
Synonyms:
Classified under:
Hypernyms ("actinoid" is a kind of...):
group; grouping (any number of entities (members) considered as a unit)
II. (adjective)
Sense 1
Meaning:
Having a radial form
Example:
starfish are actinoid--that is, they are radially symmetrical
Classified under:
Similar:
actinomorphic; actinomorphous (capable of division into symmetrical halves by any longitudinal plane passing through the axis)
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