15-letter words containing m, o, s, p
- symphony writer — a composer of an extended large-scale orchestral composition, usually with several movements, at least one of which is in sonata form
- symptomatically — pertaining to a symptom or symptoms.
- symptomological — relating to symptomology
- system operator — a person who maintains a computer system or network, especially one who operates a computer bulletin board.
- tetrasporangium — a sporangium containing four asexual spores.
- theriomorphosis — transformation into an animal form, often associated with mythological characters
- thermoperiodism — the effect on an organism of rhythmic fluctuations in temperature.
- thomas à kempis — Thomas à, 1379?–1471, German ecclesiastic and author.
- to take up arms — If one group or country takes up arms against another, they prepare to attack and fight them.
- topgallant mast — a mast fixed to the head of a topmast on a square-rigged vessel.
- trypanosomiasis — any infection caused by a trypanosome.
- ultramicroscope — an instrument that uses scattering phenomena to detect the position of objects too small to be seen by an ordinary microscope.
- ultramicroscopy — the use of the ultramicroscope.
- un-presumptuous — full of, characterized by, or showing presumption or readiness to presume in conduct or thought, as by saying or doing something without right or permission.
- uncompassionate — having or showing compassion: a compassionate person; a compassionate letter.
- uncomplaisantly — in an uncomplaisant manner
- uncomprehensive — of large scope; covering or involving much; inclusive: a comprehensive study of world affairs.
- uncompromisable — that cannot or should not be compromised
- undercompensate — to compensate or pay less than is fair, customary, or expected.
- unsportsmanlike — a man who engages in sports, especially in some open-air sport, as hunting, fishing, racing, etc.
- upperclasswoman — An upperclasswoman is a junior or senior student in a high school, college, or university.
- vernier compass — a compass on a transit (vernier transit) having a vernier for adjusting magnetic bearings to read as true bearings.
- visible imports — products that a company or country buys from other countries
- washington palm — a palm tree, Washingtonia filifera, of California and Florida, having large fan-shaped leaves and small black fruits