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15-letter words containing r, i, d, o

  • arrondissements — Plural form of arrondissement.
  • astrodynamicist — a person who studies astrodynamics
  • 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
  • autodestructive — likely to cause one's own destruction
  • 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.
  • autotetraploidy — the generation of the tetraploid state, created by the fusing of two nuclei from the same species
  • azobisformamide — (chemistry) azodicarbonamide.
  • badminton court — the court on which games of badminton are played
  • bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
  • banking product — one of the various services offered by a bank to its customers: mortgages, loans, insurance 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
  • basic autocoder — Early system on IBM 7070. Listed in CACM 2(5):16 (May 1959).
  • 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
  • bedford heights — a town in N Ohio.
  • bedroom slipper — a soft shoe worn in the house
  • before the wind — with the wind coming from astern
  • benedict arnold — Benedict, 1741–1801, American general in the Revolutionary War who became a traitor.
  • benzal chloride — a colorless, oily liquid, C 7 H 6 Cl 2 , used chiefly in the synthesis of benzaldehyde, and in the manufacture of dyes.
  • benzyl chloride — a colorless, corrosive liquid, C 7 H 7 Cl, used chiefly as an intermediate in the synthesis of benzyl compounds.
  • benzyl fluoride — a colorless liquid, C 7 H 7 F, used in organic synthesis.
  • bevelled mirror — a mirror with a bevelled edge
  • bidirectionally — in a bidirectional manner
  • billiard parlor — poolroom (def 1).
  • biodestructible — biodegradable
  • bird of passage — If you refer to someone as a bird of passage, you mean that they are staying in a place for a short time before going to another place.
  • bits per second — (communications, unit)   (bps, b/s) The unit in which data rate is measured. For example, a modem's data rate is usually measured in kilobits per second. In 1996, the maximum modem speed for use on the PSTN was 33.6 kbps, rising to 56 kbps in 1997. Note that kilo- (k), mega- (M), etc. in data rates denote powers of 1000, not 1024.
  • bladder campion — a European caryophyllaceous plant, Silene vulgaris, having white flowers with an inflated calyx
  • blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.
  • board-certified — A doctor who is board-certified has passed tests and meets the standards of a board of specialists in their area of medicine.
  • boarding school — A boarding school is a school which some or all of the pupils live in during the school term. Compare day school.
  • body toning bar — a weighted exercise bar made of steel encased in a layer of foam, used for toning and strength training.
  • boiled dressing — a cooked salad dressing thickened with egg yolks and often containing mustard.
  • border incident — an incident, usually fighting, on a border between countries
  • borderline case — a person or thing that is not clearly classifiable as something
  • boustrophedonic — of or relating to lines written in opposite directions
  • brand extension — the practice of using a well-known brand name to promote new products or services in unrelated fields
  • break-in period — a period during which certain restrictions or moderation in operating should be followed, as the avoidance of high speed, rapid acceleration, or severe braking for a new automobile.
  • breeding ground — If you refer to a situation or place as a breeding ground for something bad such as crime, you mean that this thing can easily develop in that situation or place.
  • breeding season — the time of year during which animals breed
  • bridge of sighs — a covered 16th-century bridge in Venice, between the Doges' Palace and the prisons, through which prisoners were formerly led to trial or execution
  • bring to a head — to bring or be brought to a crisis
  • broken pediment — a pediment, as over a doorway or window, having its raking cornice interrupted at the crown or apex.
  • bronze diabetes — hemochromatosis.
  • bronzing powder — the powder used in bronzing, consisting of alloys of bronze or brass
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