| axon |
the part of a nerve cell that conducts impulses away from the cell body. |
| ayah |
in India, a native nursemaid or maidservant, esp. for children or women. |
| ayatollah |
in the Shiite religion, a title awarded to a leader advanced in the study of Islamic law. |
| aye |
yes (usu. used for an oral vote). [2 definitions] |
| aye-aye |
a nocturnal lemur found in Madagascar that has shaggy dark brown fur, a long bushy tail, large ears, long clawlike fingers, and strong rodentlike teeth. |
| ayin |
the name of the sixteenth letter of the Hebrew alphabet. |
| AZ |
abbreviation of "Arizona," a southwestern U.S. state between California and New Mexico. |
| 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. |