n. [ L. anxietudo. ] The state of being anxious; anxiety. [ R. ] [ 1913 Webster ]

‖n.; pl. Arboreta [ L., a place grown with trees. ] A place in which a collection of rare trees and shrubs is cultivated for scientific or educational purposes. [ 1913 Webster ]

n. [ L. assuetudo, fr. assuetus accustomed. ] Accustomedness; habit; habitual use. [ 1913 Webster ]

Assuetude of things hurtful doth make them lose their force to hurt. Bacon. [ 1913 Webster ]

‖n.; pl. Bætuli /plu>. [ L., fr. Gr. bai`tylos a sacred meteorite. ] (Antiq.) A meteorite, or similar rude stone artificially shaped, held sacred or worshiped as of divine origin. [ 1913 Webster ]

All the evidence goes to prove that these menhirs are bætuli, i. e., traditional and elementary images of the deity. I. Gonino (Perrot & Chipiez). [ Webster 1913 Suppl. ]

n. 1. a natural family of monoecious trees and shrubs, including the genera Betula; Alnus; Carpinus; Corylus; Ostrya; and Ostryopsis.
Syn. -- family Betulaceae, birch family. [ WordNet 1.5 ]

n. [ L. betula birch tree. ] (Chem.) a term originally applied to a substance obtained as a resin or tar by extraction from the outer bark of the common European white birch (Betula alba); now referring to the chemical compound (C30H50O2) having a cyclopentanophenanthrene ring system, which is the main constituent of that extract, and which may be obtained crystalline; -- called also birch camphor. Watts. [ 1913 Webster +PJC ]

v. t. [ imp. & p. p. Betumbled ] To throw into disorder; to tumble. [ R. ] [ 1913 Webster ]

From her betumbled couch she starteth. Shak. [ 1913 Webster ]

v. t. [ imp. & p. p. Betutored ] To tutor; to instruct. Coleridge. [ 1913 Webster ]

‖n. [ L. boletus, Gr. &unr_;. ] (Bot.) A genus of fungi having the under side of the pileus or cap composed of a multitude of fine separate tubes. A few are edible, and others very poisonous. [ 1913 Webster ]

‖n.; pl. catheti [ L., fr. Gr. &unr_; a perpendicular line, fr. &unr_; let down, fr. &unr_;. See Catheter. ] (Geom.) One line or radius falling perpendicularly on another; as, the catheti of a right-angled triangle, that is, the two sides that include the right angle. Barlow. [ 1913 Webster ]

n. any of numerous shrubs or small trees of the genus Combretum having spikes of small flowers. [ WordNet 1.5 ]

n. A mass formed by concretion. [ Obs. ] Johnson. [ 1913 Webster ]

n. [ L. consuetudo. See Custom. ] Custom, habit; usage. [ R. ] [ 1913 Webster ]

To observe this consuetude or law. Barnes. [ 1913 Webster ]

a. [ LL. consuetudinalis. ] According to custom; customary; usual. [ R. ] [ 1913 Webster ]

a. [ LL. consuetudinarius. ] Customary. [ 1913 Webster ]

n.; pl. Consuetudinaries A manual or ritual of customary devotional exercises. [ 1913 Webster ]

n. [ L. desuetudo, from desuescere, to grow out of use, disuse; de + suescere to become used or accustomed: cf. F. désuétude. See Custom. ] The cessation of use; disuse; discontinuance of practice, custom, or fashion. [ 1913 Webster ]

The desuetude abrogated the law, which, before, custom had established. Jer. Taylor. [ 1913 Webster ]

n. [ L. detumescere to cease swelling; de + tumescere, tumere, to swell. ] Diminution of swelling; subsidence of anything swollen. [ R. ] Cudworth. [ 1913 Webster ]

‖n. [ L. detur let it be given. ] A present of books given to a meritorious undergraduate student as a prize. [ Harvard Univ., U. S. ] [ 1913 Webster ]

v. t. [ L. deturbare. ] To throw down. [ Obs. ] Bp. Hall. [ 1913 Webster ]

v. t. [ LL. deturbatus, p. p. of deturbare, fr. L. deturbare to thrust down. ] To evict; to remove. [ Obs. ] Foxe. [ 1913 Webster ]

n. The act of deturbating. [ Obs. ] [ 1913 Webster ]

v. t. [ Pref. de- + turn. Cf. Detour. ] To turn away. [ Obs. ] Sir K. Digby. [ 1913 Webster ]

v. t. [ L. deturpare; de + turpare to make ugly, defile, turpis ugly, foul. ] To defile; to disfigure. [ Obs. ] Jer. Taylor. [ 1913 Webster ]

n. A making foul. [ Obs. ] Jer. Taylor. [ 1913 Webster ]

‖n.; pl. Equiseta [ L., the horsetail, fr. equus horse + seta a thick, stiff hair, bristle. ] (Bot.) A genus of vascular, cryptogamic, herbaceous plants; -- also called horsetails. [ 1913 Webster ]

☞ The Equiseta have hollow jointed stems and no true leaves. The cuticle often contains siliceous granules, so that one species (E. hyemale) is used for scouring and polishing, under the name of Dutch rush or scouring rush. [ 1913 Webster ]

‖n. [ F. See Study. ] 1. A composition in the fine arts which is intended, or may serve, for a study. [ 1913 Webster ]

2. (Mus.) A study; an exercise; a piece for practice of some special point of technical execution. [ 1913 Webster ]

‖n. [ F. ] A case for one or several small articles; esp., a box in which scissors, tweezers, and other articles of toilet or of daily use are carried. [ 1913 Webster ]

‖‖, n. [ NL. exocetus, L. exocoetus a fish that sleeps on the shore, Gr. 'exw`koitos, lit., sleeping out; 'e`xw outside of + koi`th bed. ] (Zoöl.) A genus of fishes, including the common flying fishes. See Flying fish. [ 1913 Webster ]

n. [ F., fr. fermer to close. ] (Mil.) The mechanism for closing the breech of a breech-loading firearm, in artillery consisting principally of the breechblock, obturator, and carrier ring. [ Webster 1913 Suppl. ]

a. Neat; feat. [ Obs. ] Herrick. [ 1913 Webster ]

n.; pl. Fetuses [ L. fetus, foetus, a bringing forth, brood, offspring, young ones, cf. fetus fruitful, fructified, that is or was filled with young; akin to E. fawn a deer, fecundity, felicity, feminine, female, and prob. to do, or according to others, to be. ] The young or embryo of a vertebrate animal in the womb, or in the egg; often restricted to the later stages in the development of viviparous and oviparous animals. showing the main recognizable features of the mature animal, embryo being applied to the earlier stages. [ Written also fœtus. ] [ 1913 Webster ]

n. Same as Fetus. [ 1913 Webster ]

‖n.; pl. Freta [ L. ] A strait, or arm of the sea. [ 1913 Webster ]

n. 1. General composition or structure; manner in which the parts of a thing are combined; arrangement; format; make-up; style of dress, etc. [ Colloq. ] H. Kingsley. [ 1913 Webster ]

2. Specifically: A set of clothing (with accessories); as, what are you doing in that getup?; -- often used with implied disapproval or scorn. [ informal ] [ wns=1 ]
Syn. -- outfit, rig. [ WordNet 1.5 ]

n. [ L. hebetudo. ] Dullness; stupidity. Harvey. [ 1913 Webster ]

n. [ Cf. F. impétuosité. ] 1. The condition or quality of being impetuous; fury; violence. [ 1913 Webster ]

2. Vehemence, or furiousnes of temper. Shak. [ 1913 Webster ]

a. [ F. impetueux, L. impetuosus. See Impetus. ] 1. Rushing with force and violence; moving with impetus; furious; forcible; violent; as, an impetuous wind; an impetuous torrent. [ 1913 Webster ]

Went pouring forward with impetuous speed. Byron. [ 1913 Webster ]

2. Vehement in feeling; hasty; passionate; violent; as, a man of impetuous temper. [ 1913 Webster ]

The people, on their holidays,
Impetuous, insolent, unquenchable. Milton.

Syn. -- Forcible; rapid; hasty; precipitate; furious; boisterous; violent; raging; fierce; passionate.

-- Im*pet"u*ous*ly, adv. -- Im*pet"u*ous*ness, n. [ 1913 Webster ]

n. [ L., fr. impetere to rush upon, attack; pref. im- in + petere to fall upon, seek. See Petition. ] 1. A property possessed by a moving body in virtue of its weight and its motion; the force with which any body is driven or impelled; momentum. [ 1913 Webster ]

☞ Momentum is the technical term, impetus its popular equivalent, yet differing from it as applied commonly to bodies moving or moved suddenly or violently, and indicating the origin and intensity of the motion, rather than its quantity or effectiveness. [ 1913 Webster ]

2. Fig.: Impulse; incentive; stimulus; vigor; force; as, the President's strong recommendation provided the impetus needed to pass the campaign reform bill. Buckle. [ 1913 Webster +PJC ]

3. (Gun.) The altitude through which a heavy body must fall to acquire a velocity equal to that with which a ball is discharged from a piece. [ 1913 Webster ]

n. [ L. inquietudo: cf. F. inquietude. ] Disturbed state; uneasiness either of body or mind; restlessness; disquietude. Sir H. Wotton. [ 1913 Webster ]

n. [ L. insuetudo, from insuetus unaccustomed; pref. in- not + suetus, p. p. of suescere to be accustomed. ] The state or quality of being unaccustomed; absence of use or habit. [ 1913 Webster ]

Absurdities are great or small in proportion to custom or insuetude. Landor. [ 1913 Webster ]

a. Wanting health; valetudinary. [ R. ] [ 1913 Webster ]

a. Not to be returned. [ 1913 Webster ]

n. Electuary. [ Obs. ] Chaucer. [ 1913 Webster ]

n. [ L. mansuetudo: cf. F. mansuétude. ] Tameness; gentleness; mildness. [ Archaic ] [ 1913 Webster ]

prop. n. The leader of the Chinese communist party and later of the People's Republic of China; b. 1893, d. 1976. Also referred to a simply Mao. [ Also spelled Mao Tse-Tung. ] [ WordNet 1.5 ]

adj. That may not be returned for a refund; -- of purchased goods, or containers for purchased items; as, nonreturnable bottles. Opposite of returnable. [ WordNet 1.5 ]

a. Capable of being perpetuated or continued. [ 1913 Webster ]

Varieties are perpetuable, like species. Gray. [ 1913 Webster ]

a. [ OE. perpetuel, F. perpétuel, fr. L. perpetualis, fr. perpetuus continuing throughout, continuous, fr. perpes, -etis, lasting throughout. ] Neverceasing; continuing forever or for an unlimited time; unfailing; everlasting; continuous. [ 1913 Webster ]

Unto the kingdom of perpetual night. Shak. [ 1913 Webster ]

Perpetual feast of nectared sweets. Milton. [ 1913 Webster ]

Circle of perpetual apparition, or
Circle of perpetual occultation. See under Circle. --
Perpetual calendar, a calendar so devised that it may be adjusted for any month or year. --
Perpetual curacy (Ch. of Eng.), a curacy in which all the tithes are appropriated, and no vicarage is endowed. Blackstone. --
Perpetual motion. See under Motion. --
Perpetual screw. See Endless screw, under Screw. [ 1913 Webster ]

Syn. -- Continual; unceasing; endless; everlasting; incessant; constant; eternal. See Constant. [ 1913 Webster ]

. A calendar that can be used perpetually or over a wide range of years. That of Capt. Herschel covers, as given below, dates from 1750 to 1961 only, but is capable of indefinite extension.

PERPETUAL CALENDAR

Day of the month					Jan. Oct.	Apr. July Jan.	Sept. Dec.	June	Feb. Mar. Nov.	Aug. Feb.	May	Day of the Week
1	8	15	22	29	a	b	c	d	e	f	g	Mon.
2	9	16	23	30	g	a	b	c	d	e	f	Tues.
3	10	17	24	31	f	g	a	b	c	d	e	Wed.
4	11	18	25		e	f	g	a	b	c	d	Thur.
5	12	19	26		d	e	f	g	a	b	c	Fri.
6	13	20	27		c	d	e	f	g	a	b	Sat.
7	14	21	28		b	c	d	e	f	g	a	Sun.

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|1753 |1754 |1755 |1750 |1751 |1757 |*1752
 |1759 |1765 |*1760 |1761 |*1756 |1763 |1758
 |*1764 |1771 |1766 |1767 |1762 |*1768 |1769
 |1770 |*1776 |1777 |*1772 |1773 |1774 |1775