15-letter words containing o, y, s, t
- isothiocyanates — Plural form of isothiocyanate.
- isotope geology — the study and application of stable and radioactive isotopes to geological processes and their time scales
- japanese oyster — a commercial oyster, Ostrea gigas, of the Pacific coast of North America, introduced from Japan.
- john chrysostom — Saint John, a.d. 347?–407, ecumenical patriarch of Constantinople.
- keynote address — a speech, as at a political convention, that presents important issues, principles, policies, etc.
- keynote speaker — sb: gives opening speech
- keystone comedy — a short film of the silent era, often featuring the Keystone Kops.
- kinesthesiology — The medical and therapeutic study of the movement of muscles and joints.
- 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.
- legacy software — legacy system
- let yourself go — If you let yourself go, you relax and behave much more freely than usual.
- leukodystrophic — Of or pertaining to leukodystrophy.
- lifestyle block — a semi-rural property comprising a house and land for small-scale farming
- look-say method — a method of teaching beginners to read by memorizing and recognizing whole words, rather than by associating letters with sounds
- lopez y fuentes — Gregorio [gre-gaw-ryaw] /grɛˈgɔ ryɔ/ (Show IPA), 1895–1966, Mexican writer.
- lose your heart — If you lose your heart to someone, you fall in love with them.
- 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).
- lymphoid tissue — of, relating to, or resembling lymph.
- 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.
- masochistically — Psychiatry. having a condition in which sexual gratification depends on suffering, physical pain, and humiliation.
- 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.
- 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.
- medical history — the past background of a person in terms of health
- mesometeorology — the study of atmospheric phenomena of relatively small size, as thunderstorms or tornadoes, and of the detailed structure of larger disturbances.
- methylcellulose — a grayish-white powder prepared from cellulose that swells to a highly viscous colloidal solution in water: used as a food additive and in water paints, leather tanning, and cosmetics.
- microdiscectomy — (surgery) microdecompression.
- microseismicity — The state of being microseismic.
- microsporocytes — Plural form of microsporocyte.
- military school — military academy.
- mirror symmetry — symmetry about a plane (mirror plane) that divides the object or system into two mutual mirror images
- modestly priced — moderately priced; not overly expensive
- monkey, scratch — scratch monkey
- monospaced type — a typeface in which the width of all letters, including the space around them, is the same
- monospecificity — the condition of being specific for a sole antigen
- monosyllabicity — The state or characteristic of being monosyllabic.
- montgomeryshire — a historic county in Powys, in central Wales.
- more's the pity — If you add more's the pity to a comment, you are expressing your disappointment or regret about something.
- 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).
- multitudinously — In a multitudinous way.
- myelodysplastic — (medicine) Of, pertaining to, or showing evidence of myelodysplasia.
- myofibroblastic — Relating to myofibroblasts.
- myristicivorous — feeding on nutmeg
- mystery shopper — a person who is employed, often by the owners, to visit shops, hotels, etc, incognito, and assess the quality of the service offered
- nanocrystalline — Of, pertaining to, or composed of nanocrystals.
- nasopharyngitis — (medicine) An inflammation of the nasal passages, and of the upper pharynx.