| alpha | a multiple star with 6 components |
|---|---|
| alpha | a magnetic allotrope of iron |
| alpha | antihypertensive drug (trade name Aldomet) used in the treatment of high blood pressure |
| alpha | the second brightest star in Orion |
| alpha | a positively charged particle that is the nucleus of the helium atom |
| alpha | the negative prefix a- or un- |
| alpha | the radiation of alpha particles during radioactive decay |
| alpha | the radiation of alpha particles during radioactive decay |
| alpha | receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasoconstriction and relaxation of intestinal muscles and contraction of smooth muscles) |
| alpha | the normal brainwave in the electroencephalogram of a person who is awake but relaxed |
| alpha | a first release of a software product that is usually tested only by the developers |
| alpha | a first test of an experimental product (such as computer software) carried out by the developer |