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extrinsic factor

American  

noun

Biochemistry.
  1. vitamin B12.


Etymology

Origin of extrinsic factor

First recorded in 1925–30

Example Sentences

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Tomasetti and Vogelstein then sorted types of cancer according to how much of the variability in risk is due to stem-cell divisions versus to some ‘extrinsic’ factor, such as environmental exposure to carcinogens.

From Nature