Key signature -. The flats and sharps at the beginning of each staff line indicating the key of music the piece is to be played. Klangfarbenmelodie -. The technique of altering the tone color of a single note or musical line by changing from one instrument to another in the middle of a note or line.
There are many diagnoses that do not have definitive tests used to determine them, or which can't be truly diagnosed until a patient has died (upon autopsy). In these cases, doctors must use combinations of symptoms, often vague symptoms, which can lead to a lack of diagnosis. The real medical problem may be highly unusual or not appropriate to the age of the patient. The doctor might not consider a diagnosis that is very rare, or very rare for that age of the patient.
vague (vÄg) adj. vaguÂ·er, vaguÂ·est 1. Not clear in meaning or expression; inexplicit. See Synonyms at ambiguous. 2. Not thinking or expressing oneself clearly: Most of us are quite vague about the theoretical underpinnings of the medical theories that guide our doctors (Kwame Anthony Appiah). 1  3. Lacking definite shape, form, or character; indistinct: saw a vague outline of a building through the fog.