Turpentine. United States Government master specification for turpentine (gum spirits of turpentine and steam-distilled wood turpentine), Federal Specifications Board Specification 7b, revised Aug. 7, 1926, officially promulgated by Federal Specifications Board, Feb. 3, 1922, for use of Departments and independent establishments of Government in purchase of turpentine (gum spirits of turpentine and steam-distilled wood turpentine). 3d [edition].