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aluminous of or pertaining to alum or alumina.
aluminum a chemical element that has thirteen protons in each nucleus, occurs commonly in ores such as bauxite, and in pure form is a strong lightweight corrosion-resistant silvery metal with many industrial uses. (symbol: Al)
aluminum hydroxide a white, water-insoluble powder used as an antacid and to waterproof fabric and manufacture glass.
aluminum oxide a natural or synthetic oxide of aluminum; alumina; corundum.
aluminum sulfate a white, water-soluble substance used to purify water, manufacture paper, and fix dyes.
alumna a female graduate or former student of an educational institution.
alumnus a male graduate or former student of an educational institution.
Álvar Nuñez Cabeza de Vaca a Spanish explorer who, after landing on the cape of Florida in 1528 and being stranded in the Gulf coast region for 8 years, published an account of his survival and interaction with the native peoples under the title "La relación" (1542) (b.1490?--d.1557?).
alveolar of or pertaining to small cavities such as the terminal air sacs of the lungs or the cells of a honeycomb. [4 definitions]
alveolate containing many cavities or pits; honeycombed.
alveolus a small cavity or pit, such as one of the terminal air sacs of the lungs or one cell of a honeycomb. [2 definitions]
alvine of or relating to the abdomen or intestines.
always without stopping; forever. [3 definitions]
alyssum any of a group of weedy low-growing plants of the mustard family, having tiny white or yellow four-petaled flowers borne on branched stalks. [2 definitions]
Alzheimer's disease a severe, progressive disease that causes the brain cells to degenerate, often leading to dementia.
AM a system of varying a radio signal's amplitude so as to impose the signal on a carrier wave; amplitude modulation. [2 definitions]
Am symbol of the chemical element americium.
am first person present sing. of be.
a.m. abbreviation of "ante meridiem" (Latin); the period from midnight until noon.
AMA abbreviation of "American Medical Association."
amah in India and the Far East, a female servant, esp. a child's nurse.