15-letter words containing a, n, s, t, y
- labyrinthodonts — Plural form of labyrinthodont.
- lay oneself out — to put or place in a horizontal position or position of rest; set down: to lay a book on a desk.
- learned society — an organization devoted to the scholarly study of a particular field or discipline, as modern languages, psychology, or history.
- loyalty islands — a group of coral islands in the S Pacific belonging to the French territory of New Caledonia. 761 sq. mi. (1970 sq. km).
- machinery steel — low-carbon steel that can be easily machined.
- main royal mast — the part of the mainmast situated immediately above, and generally formed as a single spar with, the main topgallantmast.
- manorial system — manorialism.
- market analysis — the process of determining factors, conditions, and characteristics of a market.
- martensitically — in a martensitic manner
- master cylinder — the hydraulic pump of an automotive braking system that contains a cylinder and one or two pistons, is actuated by the brake pedal, and supplies hydraulic fluid under pressure to the brakes at each wheel.
- maternity dress — a dress worn by a pregnant woman and which is designed to allow for the changes in body size which take place during pregnancy
- maundy thursday — the Thursday of Holy Week, commemorating Jesus' Last Supper and His washing of the disciples' feet upon that day.
- meantone system — a system for tuning keyboard instruments, used before the development of tuning by equal temperament and considered practical only for tonalities of not more than two sharps or flats.
- mechanistically — of or relating to the theory of mechanism or to mechanists.
- mediastinoscopy — (medicine) A procedure for examining the inside of the mediastinum and the organs it encloses through a small incision, using an endoscope. This is a surgical procedure normally done under general anesthesia.
- menstrual cycle — (in women of reproductive age) the cycle of physiological changes affecting the reproductive organs that takes place typically over a month and includes ovulation, thickening of the lining of the womb and menstruation if fertilization of the egg has not occurred
- mid-lent sunday — Laetare Sunday.
- monkey, scratch — scratch monkey
- monospaced type — a typeface in which the width of all letters, including the space around them, is the same
- monosyllabicity — The state or characteristic of being monosyllabic.
- moreton bay ash — an Australian eucalyptus tree, E. tessellaris, having drooping branches and grey bark
- morphosyntactic — involving both morphology and syntax.
- moving stairway — escalator (def 1).
- nanocrystalline — Of, pertaining to, or composed of nanocrystals.
- nasopharyngitis — (medicine) An inflammation of the nasal passages, and of the upper pharynx.
- natural history — the sciences, as botany, mineralogy, or zoology, dealing with the study of all objects in nature: used especially in reference to the beginnings of these sciences in former times.
- necessary stool — close-stool.
- needless to say — of course, obviously
- net.personality — Someone who has made a name for him or herself on Usenet, through either longevity or attention-getting posts, but doesn't meet the other requirements of net.godhood.
- neuroplasticity — the capacity of the nervous system to develop new neuronal connections: research on neuroplasticity of the brain after injury.
- neuropsychiatry — the branch of medicine dealing with diseases involving the mind and nervous system.
- neutral density — black, white, or a shade of grey; a colourless tone
- non-crystalline — of or like crystal; clear; transparent.
- non-feasibility — capable of being done, effected, or accomplished: a feasible plan.
- non-syncopation — Music. a shifting of the normal accent, usually by stressing the normally unaccented beats.
- nonautonomously — In a manner that is not autonomous, or that lacks autonomy.
- nonclassicality — The condition of being nonclassical.
- noncompensatory — serving to compensate, as for loss, lack, or injury.
- nonpsychiatrist — a person who is not a psychiatrist
- nonpsychoactive — Not psychoactive.
- nonstationarity — The condition of being nonstationary.
- north bay shore — a city on S Long Island, in SE New York.
- northeastwardly — Towards the northeast.
- northwestwardly — Towards the northwest.
- not necessarily — If you reply 'Not necessarily', you mean that what has just been said or suggested may not be true.
- observationally — of, relating to, or founded on observation, especially founded on observation rather than experiment.
- oppositionality — Quality of being oppositional.
- pachymeningitis — inflammation of the dura mater of the brain and spinal cord
- packing density — a measure of the amount of data that can be held by unit length of a storage medium, such as magnetic tape
- pattypan squash — a flat, whitish variety of squash, Cucurbita pepo melopepo, having a scalloped edge.