U n.
ich it still retains in most of the languages of Europe, that of long oo, as in tool, and short oo, as in wood, answering to the French ou in tour. Etymologically U is most closely related to o, y (vowel), w, and v; as in two, duet, dyad, twice; top, tuft; sop, sup; auspice, aviary. See V, also O and Y. See Guide to Pr…
UNDER prep. 8 definitions
age, or the like; in a relation of the less to the greater, of inferiority, or of falling short. Three sons he dying left under age. Spenser. Medicines take effect sometimes under, and sometimes above, the natural proportion of their virtue. Hooker. There are several hundred parishes in England under twenty pounds a ye…
UP adv. 13 definitions
To or in a position of equal advance or equality; not short of, back of, less advanced than, away from, or the like; -- usually followed by to or with; as, to be up to the chin in water; to come up with one's companions; to come up with the enemy; to live up to engagements. As a boar was whetting his teeth, up comes a…
VACUUM n. 2 definitions
also at a lower temperature, which largely obviates the danger of burning the sugar, and shortens the process. -- Vacuum pump. Same as Pulsometer, 1. -- Vacuum tube (Phys.), a glass tube provided with platinum electrodes and exhausted, for the passage of the electrical discharge; a Geissler tube. -- Vacuum valve, a…