17-letter words containing m, a, c, r, o
- a christmas carol — a story (1843) by Dickens.
- absolute monarchy — a monarchy without constitutional limits
- academie goncourt — Edmond Louis Antoine Huot de [ed-mawn lwee ahn-twan y-oh duh] /ɛdˈmɔ̃ lwi ɑ̃ˈtwan üˈoʊ də/ (Show IPA), 1822–96, and his brother Jules Alfred Huot de [zhyl al-fred] /ʒyl alˈfrɛd/ (Show IPA) 1830–70, French art critics, novelists, and historians: collaborators until the death of Jules.
- access permission — permission
- accessory mineral — See at accessory (def 7).
- accessory pigment — any pigment in plants that can absorb light energy and pass the electrons along to the primary pigment which starts the process of photosynthesis.
- acetylformic acid — pyruvic acid.
- achromatic colour — colour, such as white, black, and grey, that is devoid of hue
- acromioclavicular — (anatomy) Pertaining to both the acromion and the clavicle.
- acrosome reaction — the release of enzymes from the acrosome when a spermatozoon encounters the ovum, allowing fusion with the ovum in the sexual reproductive process
- act of parliament — a law that has been passed by both of the UK Houses of Parliament and has received royal assent
- act of uniformity — any of the three statutes (1549, 1559, 1662) regulating public worship services in the Anglican Church, especially the act of 1662 requiring the use of the Book of Common Prayer.
- aerothermodynamic — Of or pertaining to aerothermodynamics.
- african army worm — the caterpillar of a widely distributed noctuid moth, Spodoptera exempta, which travels in vast hordes and is a serious pest of cereal crops and grasses in Africa and parts of Australia
- algorithmic model — (programming) A method of estimating software cost using mathematical algorithms based on the parameters which are considered to be the major cost drivers. These estimate of effort or cost are based primarily on the size of the software or Delivered Source Instructions (DSI)s, and other productivity factors known as Cost Driver Attributes. See also Parametric Model.
- aluminum chloride — a yellow-white, crystalline, water-soluble solid that in its white hydrated form, AlCl 3 ⋅6H 2 O, is used chiefly as a wood preservative and in its yellow-white anhydrous form, AlCl 3 , chiefly as a catalyst.
- american dog tick — a common tick, Dermacentor variabilis, that is the vector of Rocky Mountain spotted fever in the eastern U.S. and also carries tularemia.
- american football — American football is a game similar to rugby that is played by two teams of eleven players using an oval-shaped ball. Players try to score points by carrying the ball to their opponents' end of the field, or by kicking it over a bar fixed between two posts.
- american foxhound — one of an American breed of medium-sized dogs having a smooth, glossy coat usually black, tan, and white in color, a square-cut muzzle, hanging ears, and a moderately high-set tail, used for hunting both in packs or individually, tailing the game by scent.
- american hornbeam — any North American shrub or tree belonging to the genus Carpinus, of the birch family, yielding a hard, heavy wood, as C. caroliniana (American hornbeam)
- american woodbine — a North American plant, related to the honeysuckle, Lonicera caprifolium
- american wormseed — a plant with seeds used in medicine to treat worm infestation, Chenopodium ambrosioides
- ammonium chloride — a white soluble crystalline solid used chiefly as an electrolyte in dry batteries and as a mordant and soldering flux. Formula: NH4Cl
- amoebic dysentery — inflammation of the intestines caused by the parasitic amoeba Endamoeba histolytica
- amor vincit omnia — love conquers everything
- amphidromic point — a point of almost zero tidal fluctuation on the ocean surface, represented on a chart of cotidal lines by a point from which these lines radiate.
- analogue computer — (computer, hardware) A machine or electronic circuit designed to work on numerical data represented by some physical quantity (e.g. rotation or displacement) or electrical quantity (e.g. voltage or charge) which varies continuously, in contrast to digital signals which are either 0 or 1. For example, the turning of a wheel or changes in voltage can be used as input. Analogue computers are said to operate in real time and are used for research in design where many different shapes and speeds can be tried out quickly. A computer model of a car suspension allows the designer to see the effects of changing size, stiffness and damping.
- analytic geometry — the branch of geometry in which a coordinate graphing system makes visible, using points, lines, and curves, the numerical relationships of algebraic equations
- anchor escapement — an escapement in which wedge-shaped pallets engage with an escape wheel having pointed teeth, usually facing in the direction of revolution, so that the escape wheel recoils slightly at every release.
- anthroposemiotics — The study of human communication.
- anti-conservatism — the disposition to preserve or restore what is established and traditional and to limit change.
- antiferromagnetic — noting or pertaining to a substance in which, at sufficiently low temperatures, the magnetic moments of adjacent atoms point in opposite directions.
- antimycobacterial — (medicine) That counteracts the effects of mycobacteria.
- apartment complex — An apartment complex is a group of buildings that contain apartments and are managed by the same company.
- arcanum arcanorum — secret of secrets.
- armaments factory — a factory for producing armaments
- armature reaction — a change in the magnetic field of a dynamo caused by the magnetic field induced by the current flowing through the armature.
- armchair shopping — buying goods using a computer, telephone, or television in the home or via the postal system
- aromatic compound — an organic compound that contains one or more benzene or equivalent heterocyclic rings: many such compounds have an agreeable odor.
- astronomical unit — a unit of distance used in astronomy equal to the mean distance between the earth and the sun. 1 astronomical unit is equivalent to 1.495 × 1011 metres or about 9.3 × 107 miles
- astronomical year — year (def 4b).
- attachment theory — a set of concepts that explain the emergence of an emotional bond between an infant and primary caregiver and the way in which this bond affects the child’s behavioral and emotional development into adulthood. See also attachment (def 3a).
- aurea mediocritas — the golden mean.
- automatic writing — writing performed without apparent intent or conscious control, especially to achieve spontaneity or uncensored expression.
- baggage checkroom — a left luggage office; a place at, for example, a railway station where baggage can be left
- baltimore clipper — a small, fast American sailing vessel of the early 19th century, having a sharp hull form and two masts with a pronounced rake and carrying a brig or schooner rig.
- beardmore glacier — one of the largest glaciers, in central Antarctica. About 125 miles (200 km) long.
- beyond comparison — outstanding, without equal
- biological marker — a substance, physiological characteristic, gene, etc that indicates, or may indicate, the presence of disease, a physiological abnormality or a psychological condition
- biological mother — the mother who gave birth to a child
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