| EA | early antigen; educational age; egg albumin; electric affinity; electrical activity; electroacupunct... |
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| HAA | hearing aid amplifier; hemolytic anemia antigen; hepatitis-associated antigen; hospital activity ana... |
| LIA | Laser Institute of America; leukemia-associated inhibitory activity; lock-in amplifier; lymphocyte-i... |
| op-amp | operational amplifier |
| pre-amp | preliminary amplifier |
| two-stream amplifier | <radiobiology> Microwave amplifier based on the two-stream instability. (09 Oct 1997) |
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| amplifier | <microscopy> When the projected image of the microscope is projected less than 250 mm the objective may be moved enough from its usual position (for visual observation) to degrade the image. It can be restored by adding a lens above the ocular to bring the image into focus on the desired plane but with the objective still in its position of best-corrected image. A similar system requires an ocular in which the same corrections are made. Such lens systems are termed amplifiers. (05 Aug 1998) |
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| amplifier host | A host in which infectious agents multiply rapidly to high levels, providing an important source of infection for vectors in vector-borne diseases. (05 Mar 2000) |
| image amplifier | A device for converting a low light level fluoroscopic image to one that can be seen by the eye in a lighted environment; usually consists of an electronic light amplifier chained to a television tube. Synonym: image intensifier. (05 Mar 2000) |
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