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mass spectrometer
mass spectrum
mass transit
mass wasting
Massachusett
Massachusetts
Massachusetts Bay
massacre
massage
massage parlor
massage therapy
Massapequa
massasauga
masscult
massé
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massless
mass·less [ mássləss ]


adjective 
Definition:
 
having zero mass: with a mass of zero
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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