13-letter words containing s, y, r, o
- nondescriptly — in a nondescript manner
- nonhysterical — not hysterical or funny
- nonstationary — Not stationary.
- nonuniversity — distinct from university, not university-based
- north by east — a point on the compass 11°15′ east of north. Abbreviation: NbE.
- north by west — a point on the compass 11°15′ west of north. Abbreviation: NbW.
- northeasterly — of or located in the northeast.
- northwesterly — Situated in, or pointing to, the northwest.
- norway spruce — a European spruce, Picea abies, having shiny, dark-green needles, grown as an ornamental.
- nosogeography — the study of the geographical causes and distribution of diseases.
- nurseryperson — A nurseryman or nurserywoman.
- observability — capable of being or liable to be observed; noticeable; visible; discernible: an observable change in attitude.
- obstetrically — (medicine) In terms of obstetrics.
- obstructively — In an obstructive manner.
- odoriferously — In an odoriferous manner.
- of many parts — having many different abilities
- of many words — talkative
- omnipresently — In an omnipresent manner.
- on your marks — On your marks in British English, or on your mark in American English, is a command given to runners at the beginning of a race in order to get them into the correct position to start.
- on your terms — If you do something on your terms, you do it under conditions that you decide because you are in a position of power.
- onychophorans — Plural form of onychophoran.
- onychorrhexis — (pathology) fingernail and toenail brittleness and breakage, such as may be due to excessive strong soap and water exposure, nail polish remover, hypothyroidism, anemia, anorexia nervosa or bulimia, or after oral retinoid therapy.
- open registry — ship registration under a national flag available to all ships regardless of nationality.
- opisthography — the practice of writing on the front and back of a parchment or papyrus
- oppositionary — the action of opposing, resisting, or combating.
- opprobriously — In an opprobrious manner.
- orchesography — a written study of dancing
- ordinary loss — An ordinary loss is a loss in the course of normal business.
- orgiastically — In an orgiastic fashion.
- oscillography — a device for recording the wave-forms of changing currents, voltages, or any other quantity that can be translated into electric energy, as sound waves.
- overdiversity — excessive diversity
- overintensity — the state of being too intense
- overlay glass — case glass.
- overseriously — in an excessively serious manner
- overstability — the state of being excessively stable
- overzealously — too zealous: overzealous for reform.
- oystercatcher — any of several long-billed wading birds of the genus Haematopus that have chiefly black-and-white plumage and that feed on oysters, clams, mussels, etc.
- palaeocrystic — consisting of former glacial formation
- paramyxovirus — any of various RNA-containing viruses that are similar to but larger than the myxoviruses, including the viruses that cause mumps, measles, parainfluenza, and Newcastle disease.
- parapophysial — of or relating to a parapophysis
- parapsychosis — an abnormal psychosis
- parasymbiosis — the symbiotic relationship that occurs between certain species of fungi and lichens (which are themselves symbiotic associations between a fungus and an alga)
- parasyntheton — a word formed by parasynthesis; for example, kind-hearted
- patriot's day — the third Monday in April, a legal holiday in Me. and Mass. commemorating the battles of Lexington and Concord (April 19, 1775)
- patriots' day — the anniversary of the battles of Lexington and Concord (1775), celebrated the third Monday in April: a legal holiday in Massachusetts and Maine.
- perissodactyl — having an uneven number of toes or digits on each foot.
- petrophysical — relating to the analysis of the constitution and characteristics of rocks
- phantasmagory — phantasmagoria.
- pharmacognosy — materia medica (def 2).
- pharyngoscope — an instrument for inspecting the pharynx.