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efflorescence
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sovereign
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acer glabrum
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itinerary
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euthynnus
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ease up
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active site
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concavo-concave
concavo-concave /ˌkɑnkəvoʊˈkɑnkəv/
adjective
-
Concave on both sides
(
biconcave
, concavo-concave
)
concave on both sides