12-letter words containing ar
- antinarcotic — Opposing or countering narcotics.
- antiparabema — either of two chapels at the west end of an Armenian or Byzantine church.
- antiparallel — parallel but pointing in the opposite direction
- antiparticle — any of a group of elementary particles that have the same mass and spin as their corresponding particle but have opposite values for all other nonzero quantum numbers. When a particle collides with its antiparticle, mutual annihilation occurs
- antiquarians — Plural form of antiquarian.
- antiroll bar — a horizontal bar in the suspension system of some automotive vehicles, that stabilizes the body of the vehicle and thereby reduces sway, esp. during turns
- antispinward — (often science fiction) In a rotating reference frame, against the direction of spin.
- antisway bar — stabilizer bar.
- apartmentize — to build apartments on or in: to apartmentize the downtown area.
- apothecaries — Plural form of apothecary.
- apparatchiks — a member of an apparat, especially in a Communist country.
- apparentness — The state or quality of being apparent.
- apparitional — of or relating to an apparition or apparitions; ghostly, spectral
- appendicular — relating to an appendage or appendicle
- applied arts — arts that are put to practical use
- apricot tart — a pastry case filled with apricots
- arabia felix — an ancient division of Arabia, in the S part: sometimes restricted to Yemen.
- arabian gulf — an arm of the Arabian Sea, between SW Iran and Arabia. 600 miles (965 km) long.
- arabica bean — a high-quality coffee bean, obtained from the tree Coffea arabica
- arachnophobe — a person who is afraid of spiders
- araeosystyle — (of columned buildings) having an alternately very wide and very narrow intercolumniation
- aramid fiber — a fiber having resistance to high temperatures and great strength, formed from an aramid and used in materials for bulletproof vests and radial tires.
- aran islands — a group of three islands in the Atlantic, off the W coast of the Republic of Ireland: Aranmore or Inishmore (the largest), Inishmaan, and Inisheer. Pop: 1280 (2002). Area: 46 sq km (18 sq miles)
- araneomorphs — Plural form of araneomorph.
- arapaho peak — a mountain in N Colorado, in the Front Range of the Rocky Mountains W of Boulder. 13,506 feet (4119 meters).
- arba kanfoth — a rectangular piece of cloth with fringes at the four corners and a hole in the center for the head, worn under the clothes by Orthodox Jewish males.
- arbitrageurs — Plural form of arbitrageur.
- arbitrations — Plural form of arbitration.
- arborescence — treelike in size and form.
- arborio rice — variety of round-grain rice used for making risotto
- arborization — a branching treelike appearance in certain fossils and minerals
- arc cosecant — the angle, measured in radians, that has a cosecant equal to a given number. Symbol: csc −1. Abbreviation: arc csc;
- arc spectrum — a spectrum formed from the light produced by an electric arc, characteristic of the gas or vapor through which the arc passes.
- arch support — a rigid support placed inside a shoe so that its molded form fits the arch of the foot and relieves strain on the muscles of the foot while walking, standing, etc.
- archaeologic — Pertaining to archaeology.
- archaeometry — the use of science and modern technology in archaeology to examine and interpret archaeological remains
- archaic homo — collectively, the very robust, regionally differentiated human populations that lived in Europe, Asia, the Middle East, and Africa from 35,000 to 200,000 years ago.
- archaization — Process of becoming or turning something more archaic.
- archdeaconry — the office, rank, or duties of an archdeacon
- archdiocesan — Relating to an archdiocese.
- archdioceses — Plural form of archdiocese.
- arched truss — a truss having an archlike form but unlike a true arch in that it is free to move horizontally at its base, as in expanding or contracting because of temperature changes.
- archegoniate — having archegonia
- archenterons — Plural form of archenteron.
- archeologist — archaeology.
- archeopteryx — A specimen of the species Archaeopteryx lithographica, being the earliest and most primitive known bird, representing a transition in the evolution of dinosaurs to birds.
- archerfishes — Plural form of archerfish.
- archesporial — the primitive cell, or group of cells, that give rise to the cells from which spores are derived.
- archesporium — archespore.
- archetypally — the original pattern or model from which all things of the same kind are copied or on which they are based; a model or first form; prototype.