antinutrient

[an-tee-noo-tree-uhnt, -nyoo-, an-tahy-]
noun Biochemistry.
a substance that interferes with the utilization of one or more nutrients by the body, as oxalate and phytate, which prevent calcium absorption.

Origin:
anti- + nutrient

antinutritive [an-tee-noo-truh-tiv, -nyoo-, an-tahy-] , adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Example sentences
Phytate, a component of seeds and grains, is an antinutrient that can bind to iron and disrupt the body's ability to absorb iron.
The food has antinutrient properties that inhibit the uptake of certain vitamins and minerals.
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