(aviation) A type of altimeter which measures vertical distance to the surface below, using radio, radar, sonic, laser, or capacitive technology.

(grammar) A construction in Latin and other sister languages in which an independent phrase with a noun in the ablative case has a participle, adjective, or noun, expressed or implied, which agrees with it in gender, number and case – both words forming a clause grammatically unconnected with the rest of the sentence.

(chemistry) Reasonably pure ethyl alcohol that contains at most 1% of water

(mathematics) The mean of the absolute magnitude of a function that has both positive and negative values.

(set theory) The set that contains exactly those elements belonging to the universal set but not to a given set.

plural of decree absolute

(dated, before 1968) The unit of temperature, the kelvin.

plural of absolute error

plural of absolute complement

plural of absolute deviation