(chemistry, sciences) A gas like ammonia that has basic properties.

A database designed to meet the complex storage and retrieval requirements of computerized knowledge management, especially in support of artificial intelligence or expert systems.

(not comparable, US) Situated or happening outside the boundaries of a military base.

a year chosen for comparison with other years, in statistical analysis and various indices, such as a price index. It usually has an arbitrary value of 100 to make percentage comparisons easier. A new base year can be chosen as the years progress.

(baseball) A double, triple, or home run.

A common error in logical reasoning where an effect is attributed to an incorrect cause because the basic statistical ratios have not been taken into account.

(baseball) A metric used to evaluate the effectiveness of a hitter; the sum of on-base percentage and slugging percentage.

plural of base station subsystem

(software) An individual database in the versioning software ClearCase.

(chemistry) A measurement of the basicity of an oil, expressed in terms of the number of milligrams of potassium hydroxide per gram of oil sample.