13-letter words containing b, o
- allowable cut — the amount of a natural resource, as grain or oil, that may be harvested or taken from the earth within a specified period, as limited by law for conservation.
- allowableness — the quality of being allowable
- alpha blocker — any of various substances that interfere with the action of the alpha receptors.
- alpha-blocker — any of a class of drugs that prevent the stimulation of alpha adrenoceptors, a type of receptor in the sympathetic nervous system, by adrenaline and noradrenaline and that therefore cause widening of blood vessels: used in the treatment of high blood pressure and prostatic hyperplasia
- alphabet code — a list of easily distinguishable words, each representing a letter of the alphabet, used in radio and telephonic communications.
- alphabet soup — a confusing series of acronyms or abbreviations
- alphabetiform — having similarities to letters of the alphabet
- aluminum book — (publication) Due to a technical screwup some printings of the second edition are actually what the author calls "yucky green". See also book titles.
- ambassadorial — Ambassadorial means belonging or relating to an ambassador.
- ambidexterous — ambidextrous
- ambient noise — the level of the total noise in an area
- ambiguousness — open to or having several possible meanings or interpretations; equivocal: an ambiguous answer.
- ambimoustrous — able to use a computer mouse proficiently with either hand
- ambitiousness — having ambition; eagerly desirous of achieving or obtaining success, power, wealth, a specific goal, etc.: ambitious students.
- ambroise pare — Ambroise [ahn-brwaz] /ɑ̃ˈbrwaz/ (Show IPA), 1510–90, French surgeon.
- american bond — a brickwork bond having a course of headers between five or six courses of stretchers.
- aminobenzoate — (organic chemistry) Any salt or ester of aminobenzoic acid.
- amphibologies — Plural form of amphibology.
- anaerobically — (of an organism or tissue) living in the absence of air or free oxygen.
- angle of bank — the angle between the lateral axis of an aircraft in flight and the horizontal
- angora rabbit — a breed of rabbit with long usually white silky hair
- anno hebraico — A.H.
- anthropophobe — One who dislikes human beings.
- anti-abortion — opposed to abortion
- anti-antibody — antibody that combines with another antibody.
- anti-roll bar — a crosswise rubber-mounted bar in the suspension of a motor vehicle, which counteracts the movement downward on one side when cornering
- antibillboard — indicating an opposition to the erection of billboards
- antimetabolic — inhibiting metabolism
- antimicrobial — capable of destroying or inhibiting the growth of disease-causing microbes
- antiobscenity — opposed to or working to combat obscenity
- antiscorbutic — preventing or curing scurvy
- any number of — several or many
- apple blossom — the blossom of an apple tree
- apportionable — to distribute or allocate proportionally; divide and assign according to some rule of proportional distribution: to apportion expenses among the three men.
- arabian horse — one of a breed of horses, raised originally in Arabia and adjacent countries, noted for intelligence, grace, and speed.
- arabicization — the gradual change of a culture into one that incorporates Arab culture and/or speaks Arabic
- arachnephobia — Misspelling of arachnophobia.
- arachniphobia — Alternative form of arachnophobia.
- arachnophobia — an abnormal fear of spiders
- arachnophobic — an abnormal or pathological fear of spiders.
- arbitrational — relating to, involving, or resulting from arbitration
- arboriculture — the cultivation of trees or shrubs, esp for the production of timber
- archaeobotany — the analysis and interpretation of plant remains found at archaeological sites
- archbishopric — the rank, office, or jurisdiction of an archbishop
- arithmophobia — the fear of numbers
- armed robbery — a robbery that is carried out by people carrying guns
- armored cable — an electric cable having a metal protective covering
- armour-bearer — a retainer who carried the arms or armour of a warrior
- ascorbic acid — Ascorbic acid is another name for vitamin C.
- assembly code — assembly language