8D t - adia
- 8D technique
- a priori probability
- a priori reason
- A scope (indicator)
- AASIR
- Abbe number
- ABC bucket
- aberration
- aberwind
- ablation
- ablation area
- abnormal
- abnormal lapse rate
- abnormal propagation
- abnormal refraction
- abnormal weather
- abnormality
- above normal
- Abraham's tree
- abrego
- abroholos
- Abrolhos squalls
- abscissa
- absolute
- absolute acceleration
- absolute altimeter
- absolute altitude
- absolute angular momentum
- absolute annual range of temperature
- absolute black body
- absolute ceiling
- absolute coordinate system
- absolute drought
- absolute error
- absolute extremes
- absolute frequency
- absolute gradient current
- absolute humidity
- absolute index of refraction
- absolute instability
