#endosperm

• Albumen — A nutritive organic substance (endosperm) surrounding the embryo in the seed of certain higher plants; the egg white of a bird or reptile, considered as a primary protein-rich nutrient medium for embryonic development.
• Albuminous — Containing albumin, of the nature of albumin, or rich in soluble proteins; pertaining to tissues, biological fluids, or seeds of higher plants that incorporate a significant amount of nourishing protein endosperm.
• Aleurone — An archaic form or morphological variant derived for aleurone, designating the totality of reserve protein granules stored in the peripheral layer of the endosperm in cereal seeds. Adjectivally, the term describes a plant structure or seminal tissue with a high concentration of nitrogenous substances and crystalline protein inclusions, playing an essential role in embryo nutrition during germination.
• Aleuron — A reserve protein substance, with an amorphous or crystalloid granular structure, deposited in the cells of the outermost layer of the endosperm in plant seeds (particularly in grasses). It represents a biochemical complex rich in amino acids, phosphates, and enzymes, playing a vital structural role in nourishing and metabolically supporting the embryo during the early stages of germination.
• Aleurone — The granular protein formation localized in the cells of the outermost endosperm layer within cereal seeds and other natural or genetically modified plants. It represents a biochemical aggregate stored as crystalloids and globuloids in dehydrated vacuoles, with the fundamental function of providing amino acids, minerals, and hydrolytic enzymes required to nourish the embryo during initial germination stages.
• Aleuronic — Pertaining to aleurone, belonging to aleurone, or containing a large amount of reserve protein granules. In structural plant biology, the term describes tissues, cells, or seminal layers defined by intense enzymatic activity and the presence of nitrogenous crystalloid inclusions involved in plant germinative metabolism.