The condition called de Quervain's tenosynovitis causes pain on the inside of the wrist and forearm just above the thumb. It is a common problem affecting the wrist and is usually easy to diagnose.
â¢ DOUBLE FLAT (noun) The noun DOUBLE FLAT has 1 sense: 1. a musical notation of two flats in front of a note indicating that it is to be lowered by two semitones. Familiarity information: DOUBLE FLAT used as a noun is very rare.
For other uses, see Double vision (disambiguation) . Diplopia, commonly known as double vision, is the simultaneous perception of two images of a single object that may be displaced horizontally, vertically, diagonally (i.e., both vertically and horizontally), or rotationally in relation to each other.