| any of a group of water-soluble yellow compounds, present in citrus fruits, rose hips, and other plants, that in mammals maintain the resistance of capillary walls to permeation and change of pressure. |
vitamin P n.
A water-soluble vitamin, found as a crystalline substance especially in citrus juices, that functions as a bioflavonoid in promoting capillary resistance to hemorrhaging. Also called capillary permeability factor.
| bioflavonoid (bī'ō-flā'və-noid') Pronunciation Key
See flavonoid. |