#veins

• Acrodromous — Regarding leaves or venation patterns; exhibiting acrodromy, where two or more primary or secondary veins originate from the leaf base and run convergently toward the apex, joining at the tip.
• Actinodromous — Relating to leaf venation; characterized by a structure where three or more primary veins diverge radially from a single central point located at the base of the blade (at the petiole insertion) and run toward the margin or apex of the leaf. This structural anatomical pattern is characteristic of many dicotyledonous plant families (such as maple or grapevine leaves), ensuring an even distribution of raw sap across the entire foliar surface.
• altaite — A rare metallic mineral, a lead telluride with the chemical formula PbTe, crystallizing in the cubic (isometric) system; it stands out structurally due to a yellowish-white or tin-white color with bright yellow reflections, high density, and perfect cleavage. It was initially discovered in the Altai Mountains, from which it derives its name, encountered in hydrothermal veins often associated with native gold and other tellurides.
• Ankerite — A mineral belonging to the carbonate class, consisting of a natural calcium, magnesium, iron, and manganese carbonate, isomorphic with dolomite. It crystallizes in the rhombohedral system, typically presenting a white, gray, yellowish, or brown color (upon weathering) and a vitreous to pearly luster. It is frequently found as a gangue mineral in hydrothermal veins associated with ore deposits.
• Angiology — A branch of internal medicine and specialized anatomy that deals with the structural study, diagnosis, treatment, and prevention of disorders affecting the well-defined circulatory system, encompassing arterial, venous, and lymphatic networks. This clinical discipline plays a fundamental role in managing peripheral vascular pathologies, such as atherosclerosis obliterans, deep vein thrombosis, chronic lymphatic insufficiency, and systemic vasculitis.