15-letter words containing o, d
- apple-pie order — perfect order or condition
- approved school — In Britain in the past, an approved school was a boarding school where young people could be sent to stay if they had been found guilty of a crime.
- arc de triomphe — the triumphal arch in Paris begun by Napoleon I to commemorate his victories of 1805–6 and completed in 1836
- armaments depot — a store for armaments
- around the bend — to force (an object, especially a long or thin one) from a straight form into a curved or angular one, or from a curved or angular form into some different form: to bend an iron rod into a hoop.
- around the horn — (thrown) from third base to second to first in trying for a double play
- arrondissements — Plural form of arrondissement.
- as good as gold — excellent; very good indeed
- ascending colon — the first portion of the colon, beginning at the cecum in the lower right abdominal cavity and continuing upward along the right posterior abdominal wall to approximately the lower ribs.
- asclepiadaceous — of, relating to, or belonging to the Asclepiadaceae, a family of mostly tropical and subtropical flowering plants, including the milkweed and swallowwort, having pollen in the form of a waxy mass (pollinium): now usually regarded as a subfamily of the Apocynaceae
- astrodynamicist — a person who studies astrodynamics
- at death's door — If you say that someone is at death's door, you mean they are very ill indeed and likely to die.
- at the hands of — If someone experiences a particular kind of treatment, especially unpleasant treatment, at the hands of a person or organization, they receive it from them.
- audio equipment — electrical devices used to play or record sound
- audio frequency — a frequency in the range 20 hertz to 20 000 hertz. A sound wave of this frequency would be audible to the human ear
- audio recording — an electronic recording of sound
- auditor general — (in Canada) a federal official responsible for auditing government departments and making an annual report
- audubon society — a North American organization devoted to the conservancy of birds
- augmented roman — a writing system based on an expanded English alphabet, consisting of 43 characters representing different phonemes of spoken English, used for teaching beginners to read. Abbreviation: I.T.A., i.t.a.
- autodestructive — likely to cause one's own destruction
- autodidacticism — any self-directed learning or self-education
- automatic drive — an automotive transmission requiring either very little or no manual shifting of gears.
- autoradiographs — Plural form of autoradiograph.
- autoradiography — the technique or process of making autoradiographs.
- autoschediastic — offhand, with little forethought or preparation
- autotetraploidy — the generation of the tetraploid state, created by the fusing of two nuclei from the same species
- azerty keyboard — a common European version of typewriter keyboard layout with the characters a, z, e, r, t, and y positioned on the top row of alphabetic characters at the left side of the keyboard
- azobisformamide — (chemistry) azodicarbonamide.
- baconian method — induction (def 4a).
- bad housekeeper — a person who is not an efficient and thrifty domestic manager
- badminton court — the court on which games of badminton are played
- bag on the side — An extension to an established hack that is supposed to add some functionality to the original. Usually derogatory, implying that the original was being overextended and should have been thrown away, and the new product is ugly, inelegant, or bloated. Also "to hang a bag on the side [of]". "C++? That's just a bag on the side of C." "They want me to hang a bag on the side of the accounting system."
- ballroom dancer — a person who participates in ballroom dancing
- bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
- bank of england — the central bank of the United Kingdom, which acts as banker to the government and the commercial banks. It is responsible for managing the government's debt and implementing its policy on other monetary matters: established in 1694, nationalized in 1946; in 1997 the government restored the authority to set interest rates to the Bank
- banking product — one of the various services offered by a bank to its customers: mortgages, loans, insurance etc
- bar-code reader — an electronic machine that scans and reads bar codes
- barefoot doctor — (esp in developing countries) a worker trained as a medical auxiliary in a rural area who dispenses medicine, gives first aid, assists at childbirth, etc
- barium chloride — a poisonous compound, BaCl2, consisting of flat white crystals that are soluble in water: it is used to treat water, metals, leather, etc.
- barium peroxide — a gray-white powder, BaO2, used as a bleach and in making hydrogen peroxide
- barn-door skate — an Atlantic skate, Raja laevis, that grows to a length of 4 feet (1.2 meters) or more.
- basic autocoder — Early system on IBM 7070. Listed in CACM 2(5):16 (May 1959).
- basic education — (in India) education in which all teaching is correlated with the learning of a craft
- basidiomycetous — belonging or pertaining to the basidiomycetes.
- basse-normandie — a region of NW France, on the English Channel: consists of the Cherbourg peninsula in the west rising to the Normandy hills in the east; mainly agricultural
- be delivered of — to give birth to
- be of two minds — to be undecided or irresolute
- be on the skids — to be on the decline or downgrade; meet with failure
- be snowed under — to be overwhelmed, esp with paperwork
- beach goldenrod — a composite plant, Solidago sempervirens, of eastern and southern North America, having a thick stem and large, branched, one-sided terminal clusters of yellow flowers, flourishing on sea beaches or salt marshes.