| 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. |
| amalgam |
a metal alloy containing mercury. [2 definitions] |