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actinomorphic
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space-reflection symmetry
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action spectrum
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ad valorem
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ad valorem tax
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actinidia deliciosa
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system
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pigeon droppings
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acanthus family
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actinomyxidian
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actinism
actinism /ˈækˌtɪnɪzəm/
noun
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The property of radiation that enables it to produce photochemical effects
(
actinism
)
the property of radiation that enables it to produce photochemical effects