13-letter words containing m, a, t, r
- all-important — crucial; vital
- allochromatic — Physical Chemistry. pertaining to or having photochemical properties resulting from an impurity or from exposure to radiation.
- allotriomorph — (geology) A mineral that did not develop its otherwise typical external crystal form because of late crystallization between earlier formed crystals, typical of matrix minerals in rapidly crystallizing volcanic lavas and shallow igneous intrusions.
- alpha emitter — a radioactive isotope that emits alpha particles
- alphabetiform — having similarities to letters of the alphabet
- alstroemerias — Plural form of alstroemeria.
- alternativism — The rejection of a social normality through the pursuit of alternatives.
- aluminothermy — a process for reducing metallic oxides using finely divided aluminium powder. The mixture of aluminium and the oxide is ignited, causing the aluminium to be oxidized and the metal oxide to be reduced to the metal
- amarantaceous — amaranthine
- amateur night — an entertainment featuring amateur performers, often in competition for prizes.
- amazon parrot — any of several tropical American green parrots of the genus Amazona, popular as pets.
- ambidexterity — ambidextrous ease, skill, or facility.
- ambidexterous — ambidextrous
- ambimoustrous — able to use a computer mouse proficiently with either hand
- ambrette seed — the seed of the abelmosk.
- aminotriazole — a white, crystalline, soluble powder, NHNC(NH2)NCH, used for killing weeds or other undesired vegetation: a carcinogen
- amitriptyline — a tricyclic antidepressant drug. Formula: C20H23N
- amitryptyline — a drug with several uses, most commonly prescribed to treat depression
- ammonia water — ammonia (def 2).
- amor asteroid — one of a small group of asteroids whose orbits approach but do not cross that of the earth: named after the first such asteroid discovered (1932).
- 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
- 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.
- amplificatory — of the nature of enlargement or extension, as of a statement, narrative, etc.
- anagrammatise — To produce an anagram of (a piece of text).
- anagrammatism — The creation of anagrams.
- anagrammatist — A creator (finder) of anagrams, one who comes up with anagrams.
- anagrammatize — to arrange into an anagram
- anathematizer — One who anathematizes; a severe critic.
- androcentrism — centered on, emphasizing, or dominated by males or masculine interests: an androcentric society; an androcentric religion.
- angiokeratoma — a skin disease characterized by clusters of dilated blood vessels and by thickened skin, forming warty growths, especially on the scrotum, fingers, and toes.
- Ångstrom unit — a unit of length equal to 10 −10 metre, used principally to express the wavelengths of electromagnetic radiations. It is equivalent to 0.1 nanometre
- anharmonicity — (mechanics) Of or pertaining to the deviation of a system from harmonicity (being a harmonic oscillator).
- animadverting — Present participle of animadvert.
- animal rights — People who are concerned with animal rights believe very strongly that animals should not be exploited or harmed by humans.
- animal starch — glycogen.
- anisometropia — an imbalance in the power of the two eyes to refract light
- anisometropic — relating to anisometropia
- ante meridiem — before noon
- ante-christum — before Christ. Abbreviation: A.C.
- ante-meridian — occurring before noon.
- anthropometer — an instrument that consists of a calibrated, vertical rod to which are attached two horizontal arms, one fixed and one movable, for measuring the human trunk and limbs.
- anthropometry — the comparative study of sizes and proportions of the human body