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contractual
contracture
contradance
contradict
contradiction
contradictory
contradistinction
contraflow
contrail
contraindicate
contralateral
contralto
contraposition
contrapositive
contrapposto
contraption
contrapuntal
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contrail
con·trail [ kón tràyl ] (plural con·trails)


noun 
Definition:
 
aviation 
Same as  vapor trail
[Mid-20th century. Contraction of condensation trail]
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