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Related to balsa: balsa wood
, common name for the Bombacaceae, a family of deciduous trees, often tall and with unusually thick trunks, found chiefly in the American tropics. The family includes many commercially important members, e.g.
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Ochroma lagopus. A tropical American tree in the order Malvales; its wood is strong and lighter than cork.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The lightest of all woods, with density of about 7 to 10 lb per cu ft (110 to 160 kg per cu m); used for the core of lightweight sandwich panels, models, etc.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
1. a bombacaceous tree, Ochroma lagopus, of tropical America
2. the very light wood of this tree, used for making rafts, etc
3. a light raft
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005