14-letter words containing u, d, a, i, p
- unreciprocated — to give, feel, etc., in return.
- up and running — active, in operation
- upgradeability — an incline going up in the direction of movement.
- upper canadian — a native or inhabitant of Ontario.
- upper sideband — the frequency band above the carrier frequency, within which fall the spectral components produced by modulation of a carrier wave
- vapour density — the ratio of the density of a gas or vapour to that of hydrogen at the same temperature and pressure
- yuppie disease — any of a number of debilitating long-lasting viral disorders associated with stress, such as chronic fatigue syndrome, whose symptoms include muscle weakness, chronic tiredness, and depression
- zona pellucida — the transparent, noncellular layer surrounding the ovum of mammals, often having radial striations.