15-letter words containing di
- women's studies — a program of studies concentrating on the role of women in history, learning, and culture.
- worker director — a worker elected to the governing board of a business concern to represent the interests of the employees in decision making
- x-ray diagnosis — diagnosis by means of an X-ray
- xeroradiography — an x-ray utilizing a specially coated plate that allows a picture to be developed without the use of liquid chemicals.
- zenith distance — the angular distance from the zenith of a point on the celestial sphere to the sphere, measured along a great circle that is perpendicular to the horizon; the complement of the altitude.