15-letter words containing o, i, d, e, a
- antieducational — opposing the provision of knowledge
- aphrodite terra — a large plateau region that stretches approximately halfway around the middle latitude of Venus.
- apollo asteroid — one of a number of asteroids whose orbits cross that of the earth.
- apple-pie order — perfect order or condition
- arc de triomphe — the triumphal arch in Paris begun by Napoleon I to commemorate his victories of 1805–6 and completed in 1836
- arrondissements — Plural form of arrondissement.
- 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
- 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
- autodestructive — likely to cause one's own destruction
- automatic drive — an automotive transmission requiring either very little or no manual shifting of gears.
- 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
- azobisformamide — (chemistry) azodicarbonamide.
- baconian method — induction (def 4a).
- 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."
- bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
- 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).
- 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
- bedloe's island — Liberty Island
- belladonna lily — a tropical bulbous plant (Amaryllis belladonna) of the lily family, grown for its large pink, white, or red flowers and native to S Africa
- 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.
- bidirectionally — in a bidirectional manner
- 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.
- bit-mapped font — a computer font whose characters are held in memory as series of dots.
- 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.
- bo diddley beat — a type of syncopated Black rhythm, frequently used in rock music
- 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.
- body mass index — A person's body mass index is a measurement that represents the relationship between their weight and their height.
- boiled potatoes — potatoes, usually peeled, cooked in boiling water
- borderline case — a person or thing that is not clearly classifiable as something
- 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 season — the time of year during which animals breed
- bring to a head — to bring or be brought to a crisis
- bronze diabetes — hemochromatosis.
- buffalo soldier — (formerly, especially among American Indians) a black soldier.
- cacodaemoniacal — Demonic; evil.
- cadmean victory — a victory won with great losses to the victors
- caisson disease — decompression sickness