15-letter words containing x, o
- x-ray astronomy — the branch of astronomy that studies celestial objects by means of the x-rays emitted by them.
- x-ray diagnosis — diagnosis by means of an X-ray
- xenotransplants — Plural form of xenotransplant.
- xerographically — In a xerographic way; by xerography.
- xeroradiography — an x-ray utilizing a specially coated plate that allows a picture to be developed without the use of liquid chemicals.
- xylotypographic — involving or pertaining to xylotypography
- your-excellency — (usually initial capital letter). Also, Excellence. a title of honor given to certain high officials, as governors, ambassadors, and Roman Catholic bishops and archbishops (preceded by his, your, etc.).
- ytterbium oxide — a colorless compound, Yb 2 O 3 , used in certain alloys and ceramics.
- zermelo's axiom — axiom of choice.
- zirconium oxide — Chemistry. a white, heavy, amorphous, odorless and tasteless, infusible, water-insoluble powder, ZrO 2 , used chiefly as a pigment for paints, an abrasive, and in the manufacture of refractory crucibles.