| azalea |
any of several shrubs related to the rhododendron, often cultivated for its brightly colored flowers. |
| azathioprine |
an immunosuppressive that is administered in transplant surgery to prevent rejection of the new organ. |
| Azerbaijan |
a Near Eastern country on the Caspian Sea between Iran and Russia; formerly a republic of the Soviet Union. |
| Azerbaijani |
of or pertaining to Azerbaijan or its people, culture, language, or the like. [3 definitions] |
| Azeri |
see "Azerbaijani." |
| azimuth |
an arc measured horizontally and clockwise from a point north, in navigation, or a point south, in astronomy, to another point where a vertical circle intersects the horizon. [2 definitions] |
| azithromycin |
an antibiotic derived from erythromycin that is used to treat bacterial infections. |
| azo- |
containing nitrogen. |
| azobenzene |
an orange-red, nonsoluble crystalline compound obtained from nitrobenzene, used in organic synthesis, as an insecticide, and in the making of dyes. |
| azoic |
see "Archean." |
| Aztec |
a member of an Indian people who had an advanced civilization in central Mexico before the Spaniards conquered them in 1519. [4 definitions] |
| azure |
the color of a clear blue sky; sky blue. [2 definitions] |
| azurite |
a bright azure-blue mineral that serves as a copper ore. [2 definitions] |
| azygous |
in biology, not being part of a pair; occurring singly. |
| B |
symbol of the chemical element boron. |
| B- |
in the U.S. military, a plane used to transport and drop bombs, such as a B-17 or B-52. |
| b |
the second letter of the English alphabet. [5 definitions] |
| b. |
abbreviation of "born," brought into life by birth or in like manner (used to indicate the year or date of a birth). |
| B-1 |
a heavy U.S. jet bomber built for the 1980s. |
| B-17 |
a four-engine U.S. bomber extensively used in World War II; Flying Fortress. |
| B-29 |
a heavy U.S. bomber used late in World War II; Superfortress. |