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folded into twenty- four leaves; hence, indicating more or less definitely a size of book whose sheets are so folded; -- usually written 24mo, or 24º.

some definite law of twinning. See Twin, n., 4. Twin boat, or Twin ship (Naut.), a vessel whose deck and upper works rest on two parallel hulls. -- Twin crystal. See Twin, n., 4. -- Twin flower (Bot.), a delicate evergreen plant (Linnæa borealis) of northern climates, which has pretty, fragrant, pendulous flowers bor…

One who twists; specifically, the person whose occupation is to twist or join the threads of one warp to those of another, in weaving.

One of a sect of rigid Anabaptists, which originated in 1637, and whose tenets were essentially the same as those of the Mennonists. In addition, however, they held that Judas and the murderers of Christ were saved. So called from the founder of the sect, Ucke Wallis, a native of Friesland. Eadie.

A person to whose sole decision a controversy or question between parties is referred; especially, one chosen to see that the rules of a game, as cricket, baseball, or the like, are strictly observed. A man, in questions of this kind, is able to be a skillful umpire between himself and others. Barrow.…

o put too small a charge into; as, to undercharge a gun. Undercharged mine (Mil.), a mine whose crater is not as wide at top as it is deep. W. P. Craighill.

e at the foot or end of, as a letter or any legal instrument. The undersigned, the person whose name is signed, or the persons whose names are signed, at the end of a document; the subscriber or subscribers.

sses when temporarily thrown out of employment, as those engaged for short periods, those whose trade is decaying, and those least competent.

(Zoöl.), the narwhal. -- Unicorn moth (Zoöl.), a notodontian moth (Coelodasys unicornis) whose caterpillar has a prominent horn on its back; -- called also unicorn prominent. -- Unicorn root (Bot.), a name of two North American plants, the yellow-flowered colicroot (Aletris farinosa) and the blazing star (Chamælirium…

theory (Chem.), the modern theory that the molecules of all complete compounds are units, whose parts are bound together in definite structure, with mutual and reciprocal influence on each other, and are not mere aggregations of more or less complex groups; -- distinguished from the dualistic theory.…

A shell consisting of one valve only; a mollusk whose shell is composed of a single piece, as the snails and conchs.

a Merici, at Brescia, in Italy, about the year 1537, and so called from St. Ursula, under whose protection it was placed. The order was introduced into Canada as early as 1639, and into the United States in 1727. The members are devoted entirely to education.

ing; as, good usage; ill usage; hard usage. My brother Is prisoner to the bishop here, at whose hands He hath good usage and great liberty. Shak.

ents. Use imports a trust and confidence reposed in a man for the holding of lands. He to whose use or benefit the trust is intended shall enjoy the profits. An estate is granted and limited to A for the use of B.

nt who has the care of the door of a court, hall, chamber, or the like; hence, an officer whose business it is to introduce strangers, or to walk before a person of rank. Also, one who escorts persons to seats in a church, theater, etc. "The ushers and the squires." Chaucer. These are the ushers of Marcius. Shak.…

One who varnishes; one whose occupation is to varnish.

A clock whose decorative case has the general form of a vase, esp. one in which there is no ordinary dial, but in which a part of a vase revolves while a single stationary indicator serves as a hand.

f Colaspis and Anomala. -- Vine borer. (Zoöl.) (a) Any one of several species of beetles whose larvæ bore in the wood or pith of the grapevine, especially Sinoxylon basilare, a small species the larva of which bores in the stems, and Ampeloglypter sesostris, a small reddish brown weevil (called also vine weevil), whic…

negar plant. See 4th Mother. -- Vinegar tree (Bot.), the stag-horn sumac (Rhus typhina), whose acid berries have been used to intensify the sourness of vinegar. -- Wood vinegar. See under Wood.

One whose imagination is disturbed; one who sees visions or phantoms.