(aviation) The vertical distance between the airplane and the surface below.

plural of absolute constant

plural of absolute privilege

An endorsement that is binding only if and when the original endorsee fails to meet the terms.

plural of absolute idealism

(law) A diriment impediment that prevents a person from marrying, but does not require punishment or an annulment.

(railway) A system of managing trains that breaks the line into small segments, and if a train is in a segment, no other train may follow, unless the second train is following the first, with caution.

plural of absolute impediment

(mathematics) Of an infinite series, convergent even if the absolute value is taken of each term; a stronger condition than ordinary convergence.

plural of absolute majority