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Arsenic

Pertaining to, or derived from, arsenic; -- said of those compounds of arsenic in which this element has its highest equivalence; as, arsenic acid.

Arsenical

Of or pertaining to, or containing, arsenic; as, arsenical vapor; arsenical wall papers.

Arsenicate

To combine with arsenic; to treat or impregnate with arsenic.

Arsenicism

A diseased condition produced by slow poisoning with arsenic.

Arsenide

A compound of arsenic with a metal, or positive element or radical; -- formerly called arseniuret.

Arsenious

Pertaining to, consisting of, or containing, arsenic; as, arsenious powder or glass.

Arsenite

A salt formed by the union of arsenious acid with a base.

Arseniureted

Combined with arsenic; -- said some elementary substances or radicals; as, arseniureted hydrogen.

Arsenopyrite

A mineral of a tin-white color and metallic luster, containing arsenic, sulphur, and iron; -- also called arsenical pyrites and mispickel.

Arshine

A Russian measure of length = 2 ft. 4.246 inches.

Arsine

A compound of arsenic and hydrogen, AsH3, a colorless and exceedingly poisonous gas, having an odor like garlic; arseniureted hydrogen.

Arsis

That part of a foot where the ictus is put, or which is distinguished from the rest (known as the thesis) of the foot by a greater stress of voice. That elevation of voice now called metrical accentuation, or the rhythmic accent.

Arson

The malicious burning of a dwelling house or outhouse of another man, which by the common law is felony; the malicious and voluntary firing of a building or ship.

arsonist

a criminal who illegaly sets fire to property.

Art

The employment of means to accomplish some desired end; the adaptation of things in the natural world to the uses of life; the application of knowledge or power to practical purposes.

Artamidae

a natural family comprising the wood swallows.

Artamus

the type genus of the Artamidae.

Artemia

A genus of phyllopod Crustacea found in salt lakes and brines; the brine shrimp. See Brine shrimp.

Artemis

the virgin goddess of the hunt and the moon in Greek mythology; one of the Olympian deities, daughter of Zeus and Leto and twin sister of Apollo; identified with the Roman Diana.

Artemisia

A genus of plants including the plants called mugwort, southernwood, and wormwood. Of these Artemisia absinthium, or common wormwood, is well known, and Artemisia tridentata is the sage brush of the Rocky Mountain region.

arteria

a blood vessel that carries blood from the heart to the body.

Arteriac

Of or pertaining to the windpipe.

Arterial

Of or pertaining to an artery, or the arteries; as, arterial action; the arterial system.

Arterialization

The process of converting venous blood into arterial blood during its passage through the lungs, oxygen being absorbed and carbonic acid evolved; -- called also a/ration and hematosis.

Arterialize

To transform, as the venous blood, into arterial blood by exposure to oxygen in the lungs; to make arterial.

Arteriology

That part of anatomy which treats of arteries.

Arteriolosclerosis

a form of arteriosclerosis which affects predominantly the arterioles, found especially in people with chronic hypertension.

Arteriosclerosis

a chronic disease characterized by abnormal thickening and hardening of the walls of the arteries, esp. of the intima, occurring mostly in old age. Subtypes are distinguished, such as arteriolosclerosis and atherosclerosis.

Arteriotomy

The opening of an artery, esp. for bloodletting.

Arteritis

Inflammation of an artery or arteries.

Artery

The trachea or windpipe.

Artesian

Of or pertaining to Artois (anciently called Artesium), in France.

Artful

Performed with, or characterized by, art or skill.

Artfully

In an artful manner; with art or cunning; skillfully; dexterously; craftily.

Artfulness

The quality of being artful; art; cunning; craft.

Arthritis

Any inflammation of the joints, including the gout. A variety of forms of arthritis are recognized, some of which (such as rheumatoid arthritis, also called arthritis deformans and arthritis nodosa) are chronic and progressive, and lead to incapacitation and deformity.

Arthrodia

A form of diarthrodial articulation in which the articular surfaces are nearly flat, so that they form only an imperfect ball and socket.

Arthrodynia

An affection characterized by pain in or about a joint, not dependent upon structural disease.

Arthrodynic

Pertaining to arthrodynia, or pain in the joints; rheumatic.

Arthrogastra

A division of the Arachnida, having the abdomen annulated, including the scorpions, harvestmen, etc.; pedipalpi.

Arthrology

That part of anatomy which treats of joints.

Arthromere

One of the body segments of Arthropods. See Arthrostraca.

Arthropleura

The side or limb-bearing portion of an arthromere.

Arthropoda

A large division of Articulata, embracing all those that have jointed legs. It includes Insects, Arachnida, Pychnogonida, and Crustacea.

Arthropomata

One of the orders of Branchiopoda. See Branchiopoda.

Arthrospore

A bacterial resting cell, -- formerly considered a spore, but now known to occur even in endosporous bacteria.

Arthrostraca

One of the larger divisions of Crustacea, so called because the thorax and abdomen are both segmented; Tetradecapoda. It includes the Amphipoda and Isopoda.

Arthrotome

A strong scalpel used in the dissection of joints.

Arthrozoic

Of or pertaining to the Articulata; articulate.

Arthurian

Of or pertaining to King Arthur or his knights.

Artiad

Even; not odd; -- said of elementary substances and of radicals the valence of which is divisible by two without a remainder.

Artichoke

The Cynara scolymus, a plant somewhat resembling a thistle, with a dilated, imbricated, and prickly involucre. The head (to which the name is also applied) is composed of numerous oval scales, inclosing the florets, sitting on a broad receptacle, which, with the fleshy base of the scales, is much esteemed as an article of food.

Article

To agree by articles; to stipulate; to bargain; to covenant.

Articled

Bound by articles; apprenticed; as, an articled clerk.

Articular

Of or pertaining to the joints; as, an articular disease; an articular process.

Articulary Articular

A bone in the base of the lower jaw of many birds, reptiles, amphibians, and fishes.

Articulata

One of the four subkingdoms in the classification of Cuvier. It has been much modified by later writers.

Articulate

To joint; to unite by means of a joint; to put together with joints or at the joints.

Articulated

United by, or provided with, articulations; jointed; as, an articulated skeleton.

articulatio

the point of connection between two bones or elements of a skeleton especially if the articulatio allows motion.

Articulation

A joint or juncture between bones in the skeleton.

Articulator

One who, or that which, articulates; as: (a) One who enunciates distinctly. (b) One who prepares and mounts skeletons. (c) An instrument to cure stammering.

Articulus

A joint of the cirri of the Crinoidea; a joint or segment of an arthropod appendage.

Artifact

A product of human workmanship; -- applied esp. to the simpler products of aboriginal art as distinguished from natural objects.

Artifice

A handicraft; a trade; art of making.

Artificer

An artistic worker; a mechanic or manufacturer; one whose occupation requires skill or knowledge of a particular kind, as a silversmith.

Artificial

Made or contrived by art; produced or modified by human skill and labor, in opposition to natural; as, artificial heat or light, gems, salts, minerals, fountains, flowers.

Artificiality

The quality or appearance of being artificial; that which is artificial.

Artificially

In an artificial manner; by art, or skill and contrivance, not by nature.

Artillerist

A person skilled in artillery or gunnery; a gunner; an artilleryman.

Artillery

Munitions of war; implements for warfare, as slings, bows, and arrows.

Artilleryman

A man who manages, or assists in managing, a large gun in firing.

artiodactyl

of, pertaining to, or belonging to the order Artiodactyla.

Artiodactyla

One of the divisions of the ungulate animals. The functional toes of the hind foot are even in number, and the third digit of each foot (corresponding to the middle finger in man) is asymmetrical and paired with the fourth digit, as in the hog, the sheep, and the ox; -- opposed to Perissodactyla.

Artisan

One who professes and practices some liberal art; an artist.

Artist

One who practices some mechanic art or craft; an artisan.

Artiste

One peculiarly dexterous and tasteful in almost any employment, as an opera dancer, a hairdresser, a cook.

Artistical Artistic

Of or pertaining to art or to artists; made in the manner of an artist; conformable to art; characterized by art; showing taste or skill.

Artless

Wanting art, knowledge, or skill; ignorant; unskillful.

Artlessly

In an artless manner; without art, skill, or guile; unaffectedly.

Artlessness

The quality of being artless, or void of art or guile; simplicity; sincerity.

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