13-letter words containing s, t, o, p
- open-and-shut — immediately obvious upon consideration; easily decided: an open-and-shut case of murder.
- open-standard — (of computer programs, codes, etc) freely available to all users
- opentransport — (networking) (OT) A complete reimplementation of all levels of the Macintosh networking code including "Classic" AppleTalk and MacTCP. It appeared in MacOS revision 7.5.3 [or earlier? Date?].
- operativeness — (uncountable) The state or quality of being operative.
- opisthobranch — any gastropod mollusk of the order Opisthobranchia, as the sea slugs, sea butterflies, and sea hares, characterized by a vestigial or absent mantle and shell and two pairs of tentacles.
- opisthography — the practice of writing on the front and back of a parchment or papyrus
- opportuneness — The state or condition of being opportune.
- opportunistic — adhering to a policy of opportunism; practicing opportunism.
- opportunities — Plural form of opportunity.
- oppositionary — the action of opposing, resisting, or combating.
- oppositionist — a person who offers opposition; a member of an opposition.
- opthalmoscope — Misspelling of ophthalmoscope.
- optic chiasma — a site at the base of the forebrain where the inner half of the fibers of the left and right optic nerves cross to the opposite side of the brain.
- optical glass — any of several types of high-quality, homogeneous, color-free glass, as flint or crown glass, having specified refractive properties, used in lenses and other components of optical systems.
- optical mouse — (hardware) Any kind of mouse that uses visible light or infrared to detect changes in its position.
- optical sound — sound recorded on and subsequently played back from an optical or photographic soundtrack, as opposed to a magnetic soundtrack.
- optimizations — Plural form of optimization.
- 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.
- organotropism — Physiology. the attraction of microorganisms or chemical substances to particular organs or tissues of the body.
- orthographies — Plural form of orthography.
- osteopetrosis — any of several hereditary diseases characterized by increased bone density.
- osteophytosis — Lb medicine The presence of osteophytes.
- osteoplasties — Plural form of osteoplasty.
- ostreophagous — oyster-eating
- outperformers — Plural form of outperformer.
- outprocessing — to end a military tour of duty, accompanied by necessary paperwork: All enlisted soldiers out-process as a class.
- outspokenness — The quality of being outspoken; bluntness; frankness; candour.
- outwash plain — Geology. a broad, sloping landform built of coalesced deposits of outwash.
- over-shipment — an act or instance of shipping freight or cargo.
- overrepresent — to give too much representation to; represent in numbers that are disproportionately high.
- overspeculate — to engage in thought or reflection; meditate (often followed by on, upon, or a clause).
- ovipositional — pertaining to the laying of eggs through an ovipositor
- 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.
- painted horse — paint (def 6).
- palaeocrystic — consisting of former glacial formation
- palazzo pants — women's trousers with very wide legs
- paleo-asiatic — a member of any of various Mongoloid peoples of northeastern Asia.
- palos heights — a city in NE Illinois, near Chicago.
- pan-teutonism — Pan-Germanism.
- pantheologist — a student of, or expert in, pantheology
- pantisocratic — relating to pantisocracy
- paper profits — an unrealized profit due to the appreciation of something owned but not yet sold.
- papillomatous — a benign tumor of the skin or mucous membrane consisting of hypertrophied epithelial tissue, as a wart.
- paradise lost — an epic poem (1667) by John Milton.
- parasitoidism — the feeding by certain insect larvae on host tissues such that the host remains alive until larval development is complete and then usually dies.
- parasoft corp — Distributors of the message passing system Express.
- parasyntheton — a word formed by parasynthesis; for example, kind-hearted
- parnell shout — a social occasion where each person in a group pays for his or her own entertainment or meal