14-letter words containing a, d, i, p, o
- window display — an arrangement of items in a shop window
- world champion — someone who has won a competition open to people throughout the whole world
- xeroradiograph — an x-ray utilizing a specially coated plate that allows a picture to be developed without the use of liquid chemicals.
- zona pellucida — the transparent, noncellular layer surrounding the ovum of mammals, often having radial striations.