Plowing; tillage.

Contributing to tillage.

A genus of tall conifers of the pine family. The species are confined mostly to South America and Australia. The wood cells differ from those of other in having the dots in their lateral surfaces in two or three rows, and the dots of contiguous rows alternating. The seeds are edible.

a family of tall evergreen cone-bearing trees of South America and Australia with broad leathery leaves; in some classifications included in the Pinaceae.

Relating to, or of the nature of, the Araucaria. The earliest conifers in geological history were mostly Araucarian.

small genus of South American evergreen vines.

Lord of Annwfn (the other world; land of fairies).

Someone who engages in arbitrage (who purchases securities in one market for immediate resale in another in the hope of profiting from the price differential); shortened form of arbitrageur.

A crossbow, consisting of a steel bow set in a shaft of wood, furnished with a string and a trigger, and a mechanical device for bending the bow. It served to throw arrows, darts, bullets, etc.

A crossbowman.

To act as arbiter between.

Capable of being decided by arbitration; determinable.

Judgment by an arbiter; authoritative determination.

same as arbitrageur.

someone who engages in arbitrage; i. e. one who purchases securities in one market for immediate resale in another in the hope of profiting from the price differential.

Of or relating to an arbiter or an arbitration.

Determination; decision; arbitration.

In an arbitrary manner; by will only; despotically; absolutely.

The quality of being arbitrary; despoticalness; tyranny.

Arbitrary; despotic.

Depending on will or discretion; not governed by any fixed rules; as, an arbitrary decision; an arbitrary punishment.

To decide; to determine.

The hearing and determination of a cause between parties in controversy, by a person or persons chosen by the parties.

relating to or resulting from arbitration.

of or pertaining to arbitration; relating to or having the authority to arbitrate.

A person, or one of two or more persons, chosen by parties who have a controversy, to determine their differences. See Arbitration.

A female who arbitrates or judges.

A female arbiter; an arbitratrix.

A crossbow. See Arbalest.

A tree, as distinguished from a shrub.

abounding in trees.

Of or pertaining to trees; arboreal.

One who plants or who prunes trees.

Of or pertaining to a tree, or to trees; of nature of trees.

Furnished with an arbor; lined with trees.

Having the form, constitution, or habits, of a proper tree, in distinction from a shrub.

The state of being arborescent; the resemblance to a tree in minerals, or crystallizations, or groups of crystals in that form; as, the arborescence produced by precipitating silver.

Resembling a tree; becoming woody in stalk; dendritic; having crystallizations disposed like the branches and twigs of a tree.

resembling a tree in form and branching structure.

A small tree or shrub.

A place in which a collection of rare trees and shrubs is cultivated for scientific or educational purposes.

Relating to trees.

Tree-inhabiting; -- said of certain birds.

Pertaining to arboriculture.

The cultivation of trees and shrubs, chiefly for timber or for ornamental purposes.

One who cultivates trees.

Treelike in shape.

One who makes trees his study, or who is versed in the knowledge of trees.

The appearance or figure of a tree or plant, as in minerals or fossils; a dendrite.

Having a treelike appearance.

Formed by trees.

A dwarf tree, one in size between a shrub and a tree; a treelike shrub.

Of or pertaining to a dwarf tree; shrublike.

Containing copses of trees or shrubs; covered with shrubs.

The strawberry tree, a genus of evergreen shrubs, of the Heath family. It has a berry externally resembling the strawberry; the arbute tree.

To form a voltaic arc, as an electrical current in a broken or disconnected circuit.

A buttress that stands apart from the main structure and connected to it by an arch; same as flying buttress.

the type genus of the family Arcidae, including ark shells and blood clams.

A series of arches with the columns or piers which support them, the spandrels above, and other necessary appurtenances; sometimes open, serving as an entrance or to give light; sometimes closed at the back (as in the cut) and forming a decorative feature. A long, arched building or gallery.

Furnished with an arcade.

Of or pertaining to Arcadia; pastoral; ideally rural; as, Arcadian simplicity or scenery.

Hidden; secret.

A secret; a mystery; -- generally used in the plural.

An amoebalike protozoan with a chitinous shell resembling an umbrella.

A natural family of soil and freshwater protozoa; cosmopolitan.

A genus of chiefly American plants parasitic on conifers.

A chief.

The earliest period in geological period, extending up to the Lower Silurian. It includes an Azoic age, previous to the appearance of life, and an Eozoic age, including the earliest forms of life.

A group of single-celled microorganisms including the methanogens and some halophiles and thermoacidophiles, recognized in the 1970's by C. R. Woese and his colleagues as being a distinct group on the basis of RNA sequences, cell walls, and coenzymes differing from those of other microbes. It is believed to be an ancient form of living organism that evolved separately from the eubacteria and blue-green algae. It is classified as a separate kingdom by some taxonomists. See also The Archaebacteria.

A description of, or a treatise on, antiquity or antiquities.

Of or pertaining to the earliest Stone age; -- applied to a prehistoric period preceding the Paleolithic age.

An arch/ologist.

Relating to arch/ology, or antiquities; as, arch/ological researches.

One versed in arch/ology; an antiquary.

The science or study of antiquities, esp. prehistoric antiquities, such as the remains of buildings or monuments of an early epoch, inscriptions, implements, and other relics, written manuscripts, etc.

A fossil bird, of the Jurassic period, remarkable for having a long tapering tail of many vertebr/ with feathers along each side, and jaws armed with teeth, with other reptilian characteristics.

an extinct primitive toothed bird with a long feathered tail and three free clawed digits on each wing.

a subclass of primitive reptilelike fossil birds of the Jurassic or early Cretaceous.

Applied to a gastrula when the blastopore does not entirely close up.

the time from 1.5 billion to 5 billion years ago; the time when the earth's crust formed; a time when only unicellular organisms and the earliest forms of life are present.

Like or belonging to the earliest forms of animal life.

Of or characterized by antiquity or archaism; antiquated; obsolescent.

Archaic.

An ancient, antiquated, or old-fashioned, word, expression, or idiom; a word or form of speech no longer in common use.

Am antiquary.

Like, or imitative of, anything archaic; pertaining to an archaism.

To make appear archaic or antique.

A chief angel; one high in the celestial hierarchy.

Of or pertaining to archangels; of the nature of, or resembling, an archangel.

A chief bishop; a church dignitary of the first class (often called a metropolitan or primate) who superintends the conduct of the suffragan bishops in his province, and also exercises episcopal authority in his own diocese.

The jurisdiction or office of an archbishop; the see or province over which archbishop exercises archiepiscopal authority.

A chief butler; -- an officer of the German empire.

A chief chamberlain; -- an officer of the old German empire, whose office was similar to that of the great chamberlain in England.

A chief chancellor; -- an officer in the old German empire, who presided over the secretaries of the court.

Of supreme chemical powers.

In England, an ecclesiastical dignitary, next in rank below a bishop, whom he assists, and by whom he is appointed, though with independent authority.

The district, office, or residence of an archdeacon. See Benefice.

The office of an archdeacon.

The diocese of an archbishop.

Of or pertaining to an archduke or archduchy.

The consort of an archduke; also, a princess of the imperial family of Austria. See Archduke.

The territory of an archduke or archduchess.

A prince of the imperial family of Austria.

An archduchy.

The origination of living matter from non-living. See Abiogenesis.

Made with an arch or curve; covered with an arch; as, an arched door.

Relating to the archegonium.

of or pertaining to an archegonium.

The pistillidium or female organ in the higher cryptogamic plants, corresponding to the pistil in flowering plants.

Spontaneous generation; abiogenesis.

The science of, or a treatise on, first principles.

The division that includes man alone.

A principal enemy. Specifically, Satan, the grand adversary of mankind.

Relating to the archenteron; as, archenteric invagination.

The primitive enteron or undifferentiated digestive sac of a gastrula or other embryo. See Illust. under Invagination.

of or pertaining to archeology.

the branch of anthropology that studies prehistoric people and their cultures. Same as Arch/ology, etc.

an anthropologist who studies prehistoric people and their culture.

an extinct primitive toothed bird (Archaeopteryx lithographica) of the Upper Jurassic having a long feathered tail and hollow bones; usually considered the most primitive of all known birds. Same as archaeopteryx.

same as archaeozoic.