Definition of HM Stationery Office from the Oxford Advanced Learner's Dictionary

 

HM Stationery Office

 
BrE
 
; NAmE
 
Her/His Majesty's Stationery Office(abbreviation HMSO)
 
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a British government organization responsible for publishing and controlling the copyright (= legal right of ownership) in certain important government documents, including laws. The trading part of HMSO was sold to private owners in 1996 and now trades under the name of The Stationery Office. The HMSO is now part of the Office of Public Sector Information.