radicle

But instead of having just one root, most plants have millions of individual roots, each with a single radicle.

Seeds in 2 rows in each cell, rounded, broadly winged; cotyledons accumbent; radicle short.—A low annual, with once or twice pinnatifid leaves and leafy-bracteate racemes of yellow flowers.

At the extremity most remote from the hilum, as the embryo, or inverted with respect to the seed, as the radicle.

Darwin found, moreover, by experiment, that, when the tip of a radicle is burnt or cut, "it transmits an influence to the upper adjoining part, causing it to bend away from the affected side."

Venous emboli are those which approach the heart by the peripheral veins of the body or the pulmonary veins, and the liver by the radicles of the portal vein.