Avian influenza
Avian influenza: A highly contagious viral disease with up to 100 percent mortality in domestic fowl. Caused by influenza A virus subtypes H5 and H7. All types of birds are susceptible to the virus, but outbreaks occur most often in chickens and turkeys. The infection may be brought by migratory wild birds which can carry the virus, but show no signs of disease. Humans are only rarely affected. Also known as fowl plague, avian flu, and bird flu.
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- AVM
AVM: An AVM (arteriovenous malformation) is a congenital disorder (one present at birth) of blood vessels in the brain, brainstem, or spinal cord that is characterized by a complex, tangled web of abnormal arteries and veins connected by one or more fistulas (abnormal communications). The AVM has no capillary bed of its own and the […]
- AVM (arteriovenous malformation)
An arteriovenous malformation (AVM) is a congenital disorder (one present at birth) of blood vessels in the brain, brainstem, or spinal cord that is characterized by a complex, tangled web of abnormal arteries and veins connected by one or more fistulas (abnormal communications). The AVM has no capillary bed of its own and the fistulas […]
- Avulse
Avulse: To separate or tear away a body part, as from an accident or surgery. While playing football, he avulsed a spinous process.
- Avulsion
Avulsion: Tearing away. A nerve can be avulsed by an injury, as can part of a bone.
- Avuncular
Avuncular: 1. Literally, relating to an uncle. 2. Figuratively, suggestive of an uncle, as in geniality. 3 In medical genetics, pertaining to an aunt or uncle. An avuncular relationship is the genetic relationship between aunts and uncles and their nieces and nephews. From the Latin avunculus, meaning maternal uncle. The feminine equivalent of avuncular is […]