cnidarian
1.
(
noun
) radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms
Synonyms:
coelenterate
Related Words:
actinozoan
,
anthozoan
,
hydroid
,
hydrozoan
,
invertebrate
,
jellyfish
,
medusa
,
medusan
,
polyp
,
scyphozoan
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