One of the mysteries of the English language finally explained.
A genetically modified variety of pig that is able to digest phytic acid, producing manure with a reduced phosphorus content and hence less environmental impact. [The pigs express introduced genes for a bacterial phytase and for a mouse promoter gene enabling its secretion in the saliva. A trademark in Canada.]
1990s; earliest use found in The Globe and Mail. From enviro- + pig.
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