Dictionary.net

• A spherical body of aleurone grains; a double phosphate of calcium and magnesium.

1920 - A dictionary of scientific terms.
By Henderson, I. F.; Henderson, W. D.

• [Latin] A spherical body in aleurone grains, a double phosphate of calcium and magnesium.

1920 - A dictionary of scientific terms (6th edition)
By J.H. Kenneth