10-letter words containing a, b, e, o
- bellyboard — a small surfboard, usually 3–4 feet (0.9–1.2 meters) long, for riding waves on one's belly, sometimes used in conjunction with swim fins.
- belorussia — historical region in central Europe corresponding to present-day Belarus
- benefactor — A benefactor is a person who helps a person or organization by giving them money.
- benzocaine — a white crystalline ester used as a local anaesthetic; ethyl para-aminobenzoate. Formula: C9H11NO2
- benzofuran — a colourless insoluble aromatic liquid obtained from coal tar and used in the manufacture of synthetic resins. Formula: C8H6O
- benzoylate — to introduce the benzoyl group into (an organic compound).
- bergamasko — an inhabitant of Bergamo
- bernadotte — Folke (ˈfɔlke), Count. 1895–1948, Swedish diplomat, noted for his work with the Red Cross during World War II and as United Nations mediator in Palestine (1948). He was assassinated by Jewish terrorists
- beta stock — any of the second rank of active securities on the Stock Exchange, of which there are about 500. Continuous display of prices by market makers is required but not immediate publication of transactions
- betancourt — Rómulo [rom-yuh-loh;; Spanish raw-moo-law] /ˈrɒm yəˌloʊ;; Spanish ˈrɔ muˌlɔ/ (Show IPA), 1908–81, Venezuelan journalist and political leader: president of Venezuela 1945–48 and 1959–64.
- betrothals — the act or state of being betrothed; engagement.
- betula oil — methyl salicylate.
- bible oath — an oath sworn with one's hand on the Christian Bible
- biblioteca — a library.
- bichromate — dichromate
- bicornuate — Botany, Zoology. having two horns or hornlike parts.
- binoxalate — an acid containing the group HC 2 O 4 –, as ammonium binoxalate, C 2 H 5 NO 4 ⋅H 2 O.
- biocellate — (of animals and plants) marked with two eyelike spots or ocelli
- biodegrade — to decompose (something)
- bioethanol — a biofuel based on alcohol which may be combined with petrol for use in vehicles
- biographee — a person whose biography has been written
- biographer — Someone's biographer is a person who writes an account of their life.
- biomedical — Biomedical research examines the effects of drugs and medical techniques on the biological systems of living creatures.
- bioreactor — a machine for growing organisms
- bioreagent — a reagent of biological origin, such as an enzyme
- biotherapy — the treatment of disease by means of substances, as serums, vaccines, penicillin, etc., secreted by or derived from living organisms
- biowarfare — biological warfare.
- bipetalous — having two petals
- bipolarize — to make bipolar
- birostrate — having two beaks or beak-like projections
- bivouacked — a military encampment made with tents or improvised shelters, usually without shelter or protection from enemy fire.
- black code — any code of law that defined and especially limited the rights of former slaves after the Civil War.
- black hole — Black holes are areas in space, where gravity is so strong that nothing, not even light, can escape from them. Black holes are thought to be formed by collapsed stars.
- black pope — the head of the Jesuit order (so called from the power he once possessed and from the black habit worn by the order).
- blackstone — Sir William. 1723–80, English jurist noted particularly for his Commentaries on the Laws of England (1765–69), which had a profound influence on jurisprudence in the US
- bladderpod — any of several plants belonging to the genera Alyssoides and Lesquerella, of the mustard family, having inflated seed pods.
- blamestorm — (of colleagues in a business, government, etc) to meet in order to apportion blame for an error or failure
- blastocoel — the cavity within a blastula
- blastoderm — the layer of cells that surrounds the blastocoel of a blastula
- blastomere — any of the cells formed by cleavage of a fertilized egg
- blastopore — the opening of the archenteron in the gastrula that develops into the anus of some animals
- 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
- blood heat — Blood heat is a temperature of 37°C, which is about the same as the normal temperature of the human body.
- blood meal — the dried blood of animals used as a fertilizer, diet supplement for livestock, or deer repellent.
- 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 game — A board game is a game such as chess or backgammon, which people play by moving small objects around on a board.
- board rule — a measuring device for estimating the number of board feet in a quantity of wood
- board side — the broad side of a piece of lumber.