Absolute Pitch is simply another name for Perfect Pitch, the 1 in 10,000 people ability to tell the pitch of a note without using a reference note for comparison.

commonly referred to as pitch perfect, this exemplifies one's capacity to recognize audible pitches without the use of other pitches to guide their decision.

See perfect pitch.

the ability to identify or reproduce a musical note without using a reference pitch.

Ability to determine the exact pitch of a note as played on a musical instrument just by listening to it

A rare auditory phenomenon characterized by the ability of a person to identify or re-create a given musical note without the benefit of a reference tone (from [Deutsch 2013a]).

The exact pitch as established by its rate of vibration based on a standard scale. Perfect pitch; the ability to identify or reproduce any tone heard perfectly.