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open chain
open circuit
open classroom
open cluster
open contract
open court
open cut
open dating
open day
open door
open economy
open-end
open-end credit
open-end fund
open-end investment company
open-end mortgage
open-ended
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World English Dictionary
Dictionnaire Français

open day
o·pen day (plural o·pen days)


noun 
Definition:
 
U.K. education 
Same as  open house (sense 2)

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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