What does Medical JIA stand for? Hop on to get the meaning of JIA. The Medical Acronym /Abbreviation/Slang JIA means Juvenile Idiopathic Arthritis. by AcronymAndSlang.com
Staff (music) In standard Western musical notation, the staff, or stave, [1] is a set of five horizontal lines and four spaces that each represent a different musical pitchâor, in the case of a percussion staff, different percussion instruments.
n. 1  1. Music A slender wooden stick or rod used by a conductor to direct an orchestra, band, or other musical group. 2  2. A hollow metal rod with a heavy rubber tip or tips that is wielded and twirled by a drum major or drum majorette. 3  3. A short staff carried by certain public officials as a symbol of office.