13-letter words containing t, o, r, s, l
- normalisation — Alternative form of normalization.
- north olmsted — a city in NE Ohio, near Cleveland.
- north sea oil — oil extracted from deposits beneath the North Sea
- northeasterly — of or located in the northeast.
- northerliness — The quality of being northerly.
- northwesterly — Situated in, or pointing to, the northwest.
- numerologists — the study of numbers, as the figures designating the year of one's birth, to determine their supposed influence on one's life, future, etc.
- observability — capable of being or liable to be observed; noticeable; visible; discernible: an observable change in attitude.
- observational — of, relating to, or founded on observation, especially founded on observation rather than experiment.
- obstacle race — a foot race in which the contestants are prevented in a specific way from covering the full course at top speed, as by having hurdles to jump, sacks enclosing the legs, or potatoes to pick up.
- obstetrically — (medicine) In terms of obstetrics.
- obstructively — In an obstructive manner.
- of all others — above all others
- off the rails — into or in a state of dysfunction or disorder
- old northwest — a territory of Canada lying N of 60 degrees N and extending E from the Yukon Territory to Nunavut. 519,732 sq. mi. (1,346,106 sq. km) Capital: Yellowknife.
- old ritualist — Raskolnik.
- olfactometers — Plural form of olfactometer.
- omnipresently — In an omnipresent manner.
- oral solution — An oral solution is a medicine in liquid form for drinking.
- orchestralist — a person who writes or arranges orchestral music
- orchidologist — someone who is knowledgeable in orchidology
- organ whistle — a steam or air whistle in which the jet is forced up against the thin edge of a pipe closed at the top.
- orgiastically — In an orgiastic fashion.
- originalities — Plural form of originality.
- ornamentalism — the desire or tendency to feature ornament in the design of buildings, interiors, furnishings, etc.
- ornamentalist — A person who ornaments.
- ornithologist — the branch of zoology that deals with birds.
- orthogonalise — to make (vectors, functions, etc.) orthogonal.
- orthosilicate — a silicate mineral
- oscillometric — an instrument for measuring oscillations, especially those of the arterial pulse.
- osmoregulator — Any organism that practices osmoregulation.
- ostreiculture — the breeding of oysters
- ostrobogulous — (humorous) Slightly risqu\u00e9 or indecent; bizarre, interesting, or unusual.
- otherworldish — characterized by otherworldliness
- outlaw strike — wildcat strike.
- overspeculate — to engage in thought or reflection; meditate (often followed by on, upon, or a clause).
- overstability — the state of being excessively stable
- overstimulate — to stimulate too much
- palaeocrystic — consisting of former glacial formation
- paradise lost — an epic poem (1667) by John Milton.
- parnell shout — a social occasion where each person in a group pays for his or her own entertainment or meal
- parrot's-bill — a showy, vinelike plant, Clianthus puniceus, of New Zealand, having clusters of eight white-streaked, crimson flowers.
- parsons table — a square or rectangular table, often of lightweight material, with straight legs that are square in cross section and of the same thickness as the top extending from the corners flush with the top so as to appear jointless.
- pastel orange — suntan (def 3).
- pastoral care — help with personal needs and problems given by a teacher
- patripotestal — Anthropology. of or relating to the authority exercised by a father or a father's blood relatives.
- periodicalist — a writer of articles for periodicals
- perissodactyl — having an uneven number of toes or digits on each foot.
- perlustration — the act of perlustrating; a thorough inspection or survey, esp of letters for purposes of surveillance
- personal best — A sports player's personal best is the highest score or fastest time that they have ever achieved.