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see bombaxbombax
, 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.

balsa, corkwood

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.


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
References in periodicals archive ?
The Nahua people of the Rio Balsas are part of Mexico's largest ethnic minority; about 1.
By the 1970s, over a dozen villages in the Alto Balsas were producing amate paintings.
He'd cut them in Ecuador, where Thor had found giant balsa trees.
His genetic data, he says, pinpoint the Balsas River drainage -- a lowland site - as "the most likely home of the ancestor to maize.