10-letter words containing a, l, r, o
- blastopore — the opening of the archenteron in the gastrula that develops into the anus of some animals
- blockboard — a type of plywood in which soft wood strips are bonded together and sandwiched between two layers of veneer
- bloggerati — those considered to be important or influential in the world of blogging
- blogstream — the publication on the internet of content from weblogs rather than from mainstream media sources
- blue coral — any coral of the genus Heliopora, having brown polyps and a blue skeleton, found in the Indo-Pacific region.
- bluethroat — a small brownish European songbird, Cyanosylvia svecica, related to the thrushes, the male of which has a blue throat: family Muscicapidae
- board rule — a measuring device for estimating the number of board feet in a quantity of wood
- boat drill — practice in launching the lifeboats and taking off the passengers and crew of a ship
- bohmerwald — German name of Bohemian Forest.
- bootloader — a bootstrap loader
- bordelaise — denoting a brown sauce flavoured with red wine and sometimes mushrooms
- borderland — The borderland between two things is an area which contains features from both of these things so that it is not possible to say that it belongs to one or the other.
- borrowable — to take or obtain with the promise to return the same or an equivalent: Our neighbor borrowed my lawn mower.
- botryoidal — (of minerals, parts of plants, etc) shaped like a bunch of grapes
- bowler hat — A bowler hat is a round, hard, black hat with a narrow brim which is worn by men, especially British businessmen. Bowler hats are no longer very common.
- brachylogy — a concise style in speech or writing
- brahmaloka — the highest part of Kamaloka, where refined souls exist in blissful contemplation of Brahma.
- brailowsky — Alexander [al-ig-zan-der,, -zahn-;; Russian uh-lyi-ksahn-dr] /ˌæl ɪgˈzæn dər,, -ˈzɑn-;; Russian ʌ lyɪˈksɑn dr/ (Show IPA), 1896–1976, Russian pianist.
- brazilwood — a hard, reddish wood obtained from several tropical American trees (genera Caesalpinia and Haematoxylon) of the caesalpinia family: it yields a red or blue dye and is also used in making cabinets and violin bows
- bread mold — any of an order (Mucorales, esp. Rhizopus nigricans) of fungi often found on decaying vegetable matter or bread
- bread roll — a small piece of bread dough made into a circular shape and baked
- breastplow — a cultivator moved forward by a person pressing the chest against a crossbar.
- brillo pad — a scouring pad made of wire wool filled with soap
- broad seal — the official seal of a nation and its government
- broadcloth — fabric woven on a wide loom
- broadlands — a Palladian mansion near Romsey in Hampshire: formerly the home of Lord Palmerston and Lord Mountbatten
- broadscale — on a broad scale; extensive; spread over a wide area
- brocatelle — a heavy brocade with the design in deep relief, used chiefly in upholstery
- brown alga — an alga of the class Phaeophyceae, usually brown owing to the presence of brown pigments in addition to the chlorophyll.
- brown coal — a low-quality coal intermediate in grade between peat and lignite
- bulk cargo — unpackaged cargoes, such as grain or coal
- bullroarer — a wooden slat attached to a thong that makes a roaring sound when the thong is whirled: used esp by native Australians in religious rites
- cabriolets — Plural form of cabriolet.
- cagliostro — Count Alessandro di (alesˈsandro di), original name Giuseppe Balsamo. 1743–95, Italian adventurer and magician, who was imprisoned for life by the Inquisition for his association with freemasonry
- cake flour — finely ground wheat flour.
- calcareous — of, containing, or resembling calcium carbonate; chalky
- calceiform — shaped like a shoe or slipper
- calciferol — a fat-soluble steroid, found esp in fish-liver oils, produced by the action of ultraviolet radiation on ergosterol. It increases the absorption of calcium from the intestine and is used in the treatment of rickets. Formula: C28H43OH
- calcitriol — Biochemistry. a vitamin D compound, C 27 H 44 O 3 , occurring in humans as a hormone derived from cholesterol, that acts in the regulation and absorption of calcium.
- calculator — A calculator is a small electronic device that you use for making mathematical calculations.
- calefactor — a heater
- calibrator — to determine, check, or rectify the graduation of (any instrument giving quantitative measurements).
- california — a state on the W coast of the US: the third largest state in area and the largest in population; consists of a narrow, warm coastal plain rising to the Coast Range, deserts in the south, the fertile central valleys of the Sacramento and San Joaquin Rivers, and the mountains of the Sierra Nevada in the east; major industries include the growing of citrus fruits and grapes, fishing, oil production, electronics, information technology, and films. Capital: Sacramento. Pop: 35 484 453 (2003 est). Area: 411 015 sq km (158 693 sq miles)
- call forth — to cause (something) to come into action or existence
- call-board — a bulletin board, as in a theater, on which notices are posted announcing rehearsals, changes in the cast, etc.
- caloricity — Ectothermy.
- calorifier — a water tank fitted with a coil, or coils, that can be heated in order to heat the water
- calyciform — having the form of a calyx
- camelopard — giraffe
- camerlengo — a cardinal who acts as the pope's financial secretary and the papal treasurer