| aviation | Design, development, manufacture, and operation of heavier-than-air aircraft. (12 Dec 1998) |
|---|---|
| aviation medicine | The study and practice of medicine as it applies to physiologic problems peculiar to aviation. Synonym: aeromedicine. (05 Mar 2000) |
| aviation otitis | See Aerotitis. (12 Dec 1998) |
| maxillary sinusitis | Inflammation of the maxillary sinus. In most cases it is the result of infection by the bacteria haemophilus influenzae, streptococcus pneumoniae, and staphylococcus aureus. This condition may be acute or chronic. (12 Dec 1998) |
| sinusitis | <pathology> Inflammation of a sinus. The condition may be purulent or nonpurulent, acute or chronic. Depending on the site of involvement it is known as ethmoid, frontal, maxillary or sphenoid sinusitis. (18 Nov 1997) |
| sphenoid sinusitis | Inflammation of the sphenoid sinus. This condition usually is accompanied by pansinusitis and may present itself in an acute or chronic form. (12 Dec 1998) |
| infectious sinusitis of turkeys | See: chronic respiratory disease. (05 Mar 2000) |
| ethmoid sinusitis | Inflammation of the ethmoid sinus. It may present itself as an acute (associated with viral rhinitis) or chronic (associated with allergic or hyperplastic sinusitis) condition. (12 Dec 1998) |
| frontal sinusitis | Inflammation of the frontal sinus; in most cases the infection is caused by the bacteria streptococcus pneumoniae and haemophilus influenzae. This condition may be acute or chronic. (12 Dec 1998) |