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a unit of mass equal to 1000 kg or 2204.6 pounds
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
tonne(tun) (metric ton) A unit of mass equal to 1000 kilograms and close to the long ton (1016 kg, 2240 lb).
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
A unit of mass in the metric system, equal to 1000 kilograms or to approximately 2204.62 pound mass. Also known as metric ton; millier; ton; tonneau.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A metric ton; a unit of mass equal to 1000 kilograms (approximately 2205 pounds).
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.