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rift
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operating room
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costing
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piggyback plant
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prohibited
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plesiosaurus
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orchard
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concavo-concave
concavo-concave /ˌkɑnkəvoʊˈkɑnkəv/
adjective
-
Concave on both sides
(
biconcave
, concavo-concave
)
concave on both sides