15-letter words containing a, d, r, i
- alexandroupolis — a port in NE Greece, in W Thrace. Pop: 52 720 (2001 est)
- alfred e. smith — Adam, 1723–90, Scottish economist.
- alkylating drug — any of various potentially cytotoxic, carcinogenic, and mutagenic substances: used therapeutically to destroy cells, especially proliferating cancer cells.
- all-wheel drive — a system used in motor vehicles in which all four (or more) wheels are permanently connected to the source of power, in such a way that each wheel is able to rotate at a different speed
- allotetraploidy — the condition of being an allotetraploid
- almighty dollar — money regarded as a major goal in life or as the basis of power: Love of the almighty dollar has ruined many people.
- alpha radiation — alpha particles emitted from a radioactive isotope
- amaryllidaceous — of, relating to, or belonging to the Amaryllidaceae, a family of widely cultivated flowering plants having bulbs and including the amaryllis, snowdrop, narcissus, and daffodil
- ambassadorships — Plural form of ambassadorship.
- american indian — American Indian people or things belong to or come from one of the native peoples of America.
- american linden — any tree of the genus Tilia, as T. americana (American linden) or T. europaea (European linden) having fragrant yellowish-white flowers and heart-shaped leaves, grown as an ornamental or shade tree. Compare linden family.
- amphiarthrodial — a joint permitting only slight motion, as that between the vertebrae.
- an axe to grind — an ulterior motive
- andrada e silva — José Bonifacio de [zhaw-ze baw-nee-fah-syoo di] /ʒɔˈzɛ ˌbɔ niˈfɑ syʊ dɪ/ (Show IPA), 1763–1838, Brazilian statesman and scientist: architect of Brazilian independence.
- andrew carnegie — Andrew, 1835–1919, U.S. steel manufacturer and philanthropist, born in Scotland.
- andrographolide — (organic compound) A bitter labdane diterpenoid that is the main bioactive component of the medicinal plant Andrographis paniculata, effective against certain cancers.
- andromonoecious — (of a plant species) having hermaphrodite and male flowers on the same plant
- androstenedione — a weak hormone, C19H26O2, produced by the ovaries, testes, and adrenal glands as a precursor to estrogen, testosterone, etc.: formerly taken in a concentrated tablet or capsule form as by some bodybuilders
- aneroid capsule — a box or chamber of thin metal, partially exhausted of air, used in the aneroid barometer and pressure altimeter.
- anniversary day — a day for celebrating the foundation date of one of the former Provinces
- anti-depressant — An anti-depressant is a drug which is used to treat people who are suffering from depression.
- anti-federalism — U.S. History. a member or supporter of the Antifederal party.
- anti-productive — having the power of producing; generative; creative: a productive effort.
- anti-radicalism — the holding or following of radical or extreme views or principles.
- antiaphrodisiac — something that represses sexual desire
- anticancer drug — a drug used to treat cancer
- anticardiolipin — (medicine, immunology) Directed against cardiolipin.
- antidepressants — of or relating to a substance that is used in the treatment of mood disorders, as characterized by various manic or depressive affects.
- antifederalists — Plural form of antifederalist.
- antitraditional — opposed to or acting with disregard for tradition
- 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.
- appendicularian — of or relating to a family of molluscs (Appendicularia) characterized by their long tail appendages
- 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
- archibald prize — an annual prize awarded by the Trustees of the Art Gallery of New South Wales since 1921, for outstanding contributions to art, letters, science, and politics
- arrondissements — Plural form of arrondissement.
- ascribed status — the social position assigned to a person on the basis of kinship, ethnic group, sex, etc.
- astrodynamicist — a person who studies astrodynamics
- atlantic ridley — ridley (def 1).
- atlantic-ridley — ridley (def 1).
- attitude survey — a survey of the opinions held by a particular group of people
- audience rating — a figure based on statistical sampling indicating what proportion of the total listening and viewing audience tune in to a specific programme or network
- 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
- auf wiedersehen — goodbye, until we see each other again
- 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.