13-letter words containing i, p, a
- alpha carinae — Canopus1
- alpha emitter — a radioactive isotope that emits alpha particles
- alpha eridani — Achernar
- alpha orionis — Betelgeuse
- alpha scorpii — Antares
- alpha testing — (programming) Testing of software at the developer's site by the customer. The stage before beta testing.
- 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.
- aluminography — algraphy.
- aluminum soap — any of the salts formed by higher carboxylic acids and aluminum, as aluminum oleate, aluminum palmitate, and aluminum stearate.
- alymphoplasia — (medicine) aplasia of the lymphoid tissue.
- 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
- 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
- amphiblastula — the free-swimming larva of certain sponges, which consists of a hollow spherical mass of cells some of which have flagella
- amphibologies — Plural form of amphibology.
- amphictyonies — Plural form of amphictyony.
- amphidiploidy — (of an organism or cell) the condition of being amphidiploid ie having a diploid set of chromosomes from each parent
- amphigastrium — any of the small leaves or appendages on the under surface of the stem of some liverworts
- 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
- amphistomatal — (of a leaf) having stomata on both surfaces
- amphithalamus — (in an ancient Greek house) a room adjoining the thalamus.
- 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.
- amphitrichous — having a single flagellum at each end.
- amphitryon 38 — a play (1938) by Jean Giraudoux.
- amphotericins — Plural form of amphotericin.
- amplification — the act or result of amplifying
- amplificative — Amplificatory.
- amplificatory — of the nature of enlargement or extension, as of a statement, narrative, etc.
- analphabetism — the inability to read and write, illiteracy
- anaphorically — referring back to or substituting for a preceding word or group of words: anaphoric reference.
- anaphrodisiac — tending to lessen sexual desire
- anaphylactoid — Of, pertaining to, or resembling anaphylaxis.
- angioplasties — Plural form of angioplasty.
- angiospermous — of or relating to an angiosperm; having enclosed seeds.