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OID
oidium
oik
oil
oil acne
oil beetle
oil burner
oil cake
oil card
oil-cooled
oil drum
oil field
oil-fired
oil gland
oil of cloves
oil of wintergreen
oil paint
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oil trap
oil trap (plural oil traps)


noun 
Definition:
 
blockage holding oil or gas: a set of conditions within rock strata that blocks the upward movement of oil or gas, causing it to accumulate
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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