13-letter words containing a, p, e
- alpha emitter — a radioactive isotope that emits alpha particles
- alpha eridani — Achernar
- alpha testing — (programming) Testing of software at the developer's site by the customer. The stage before beta testing.
- 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
- alphabetarian — a person learning, or studying, the alphabet
- alphabetiform — having similarities to letters of the alphabet
- alphabetizing — Present participle of alphabetize.
- alphanumerics — Plural form of alphanumeric.
- alpine azalea — a low, branching shrub, Loiseleuria procumbens, of northern regions, having evergreen leaves and clusters of white or pink flowers.
- alpine chough — a bird of the crow family, Pyrrocorax graculus, found in the highest mountain regions of S Europe and central Asia, with a yellow bill, black plumage, and red legs
- alpine garden — a rock garden.
- alpine tundra — a tundra that is treeless because of high elevation rather than high latitude.
- althorp house — a mansion in Northamptonshire: seat of the Earls Spencer since 1508; originally a medieval house; altered (1787) to its present neoclassical style by Henry Holland. Diana, Princess of Wales is buried on Round Oval Island in the centre of the ornamental lake in Althorp Park
- ambroise pare — Ambroise [ahn-brwaz] /ɑ̃ˈbrwaz/ (Show IPA), 1510–90, French surgeon.
- amenhotep iii — Greek name Amenophis. ?1411–?1375 bc, Egyptian pharaoh who expanded Egypt's influence by peaceful diplomacy and erected many famous buildings
- america's cup — an international yachting trophy, first won by the schooner America in 1851 and held as a challenge trophy by the New York Yacht Club until 1983
- american plan — a hotel rate in which the charge includes meals
- amesha spenta — any of the personified attributes of Ahura Mazda.
- aminophylline — a derivative of theophylline that relaxes smooth muscle and is used mainly to dilate the airways in the treatment of asthma and emphysema
- amitriptyline — a tricyclic antidepressant drug. Formula: C20H23N
- amitryptyline — a drug with several uses, most commonly prescribed to treat depression
- amorphousness — lacking definite form; having no specific shape; formless: the amorphous clouds.
- amphibologies — Plural form of amphibology.
- amphictyonies — Plural form of amphictyony.
- amphiprostyle — (esp of a classical temple) having a set of columns at both ends but not at the sides
- amphisbaenian — any of a legless, burrowing suborder (Amphisbaenia) of tropical reptiles (order Squamata) with a head and tail that look very much alike
- amphitheaters — Plural form of amphitheater.
- amphitheatral — relating to an amphitheatre, taking place in an amphitheatre
- amphitheatres — Plural form of amphitheatre.
- amphitheatric — Of, pertaining to, exhibited in, or resembling an amphitheatre.
- amphitrichate — having a single flagellum at each end.
- amphotericins — Plural form of amphotericin.
- amplificative — Amplificatory.
- analphabetism — the inability to read and write, illiteracy
- anchor pocket — a recess in the bow of a vessel, for housing a stockless anchor.
- anchorpersons — Plural form of anchorperson.
- anencephalous — congenital absence of part or all of the brain.
- angioplasties — Plural form of angioplasty.
- angiospermous — of or relating to an angiosperm; having enclosed seeds.
- anise camphor — anethole.
- anisometropia — an imbalance in the power of the two eyes to refract light
- anisometropic — relating to anisometropia
- annual report — a report presented by the directors of a company to its shareholders each year, containing the profit-and-loss account, the balance sheet, and details of the past year's activity
- annular space — An annular space is a ring-shaped space outside the drillpipe, through which mud and cuttings are removed.
- another place — the other House of Parliament (used in the House of Commons to refer to the House of Lords and vice versa)
- antepenultima — (poetry) The last syllable of a word except two; an antepenult.
- anthophyllite — a black or greenish-black mineral from the hornblende group, found in igneous and metamorphic rocks
- anthropogenic — relating to anthropogenesis