13-letter words containing a, c, o, s, t, e
- object pascal — (language) An object-oriented Pascal developed jointly by Apple Computer and Niklaus Wirth.
- 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.
- obstetricians — Plural form of obstetrician.
- occidentalism — Occidental character or characteristics.
- oceanic crust — the brown, hard outer portion or surface of a loaf or slice of bread (distinguished from crumb).
- octagon house — a type of American house, c. 1850, having an octagonal perimeter to reduce exterior wall area.
- octagon scale — a scale used in laying out octagonal figures of various sizes.
- octogenarians — Plural form of octogenarian.
- octosyllables — Plural form of octosyllable.
- olfactometers — Plural form of olfactometer.
- opthalmoscope — Misspelling of ophthalmoscope.
- optical mouse — (hardware) Any kind of mouse that uses visible light or infrared to detect changes in its position.
- orchestra pit — musicians' seating in front of stage
- orchestra-pit — a group of performers on various musical instruments, including especially stringed instruments of the viol class, clarinets and flutes, cornets and trombones, drums, and cymbals, for playing music, as symphonies, operas, popular music, or other compositions.
- orchestralist — a person who writes or arranges orchestral music
- orchestrating — Present participle of orchestrate.
- orchestration — (uncountable) the arrangement of music for performance by an orchestra.
- orchestrators — Plural form of orchestrator.
- orthosilicate — a silicate mineral
- ovariectomies — Plural form of ovariectomy.
- over-abstract — thought of apart from concrete realities, specific objects, or actual instances: an abstract idea.
- over-cautious — excessively or unnecessarily cautious: Sometimes it doesn't pay to be overcautious in business.
- overacuteness — sharp or severe in effect; intense: acute sorrow; an acute pain.
- overcast seam — a hem with long stitches passing successively over the edge
- overspeculate — to engage in thought or reflection; meditate (often followed by on, upon, or a clause).
- 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.
- package store — a store selling sealed bottles or other containers of alcoholic beverages that may only be consumed off the premises.
- pact of steel — a military alliance concluded between Nazi Germany and Fascist Italy on May 22, 1939, committing each to assist the other in the event of war with another power and pledging that neither would seek a separate peace or armistice.
- palaeocrystic — consisting of former glacial formation
- paleo-asiatic — a member of any of various Mongoloid peoples of northeastern Asia.
- pastoral care — help with personal needs and problems given by a teacher
- penobscot bay — an inlet of the Atlantic in S Maine. 30 miles (48 km) long.
- pentastichous — (of plant leaves) arranged in five vertical rows
- pentatonicism — the use of a five-tone scale.
- periodicalist — a writer of articles for periodicals
- perissodactyl — having an uneven number of toes or digits on each foot.
- perscrutation — a very careful exploration or inspection
- personalistic — Also called personal idealism. a modern philosophical movement locating ultimate value and reality in persons, human or divine.
- petrophysical — relating to the analysis of the constitution and characteristics of rocks
- phelloplastic — an image or a representation that has been fashioned from cork
- phlogisticate — to integrate or blend phlogiston with
- pictorialness — the state of being pictorial
- plain-clothes — Plain-clothes police officers wear ordinary clothes instead of a police uniform.
- plastic money — credit cards, used instead of cash
- pneumogastric — of or relating to the lungs and stomach.
- pocket-square — a handkerchief, often colored or figured, worn in the breast pocket of a suit or blazer as a fashion accessory.
- post exchange — a retail store on an army installation that sells goods and services to military personnel and their dependents and to certain authorized civilian personnel. Abbreviation: PX.
- post-actinide — transactinide
- postage costs — the cost of having mail delivered