13-letter words containing a, s, p, o
- nonpunishable — Not punishable; of an act, for which no punishment has been authorized; of a person, beyond the reach of punishment.
- nonspecialist — a person who devotes himself or herself to one subject or to one particular branch of a subject or pursuit.
- 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.
- nucleocapsids — Plural form of nucleocapsid.
- nucleoplasmic — Of or pertaining to nucleoplasm.
- nymphaeaceous — belonging to the Nymphaeaceae, the water lily family of plants.
- nymphomaniacs — Plural form of nymphomaniac.
- object pascal — (language) An object-oriented Pascal developed jointly by Apple Computer and Niklaus Wirth.
- ocean springs — a town in SE Mississippi.
- of many parts — having many different abilities
- oilspot glaze — a brown or black ceramic glaze dotted with silvery spots caused by impurities.
- olympic games — international sports event
- ombudsmanship — The position or office of an ombudsman.
- omoplatoscopy — Divination by use of a shoulder blade.
- on one's part — a portion or division of a whole that is separate or distinct; piece, fragment, fraction, or section; constituent: the rear part of the house; to glue the two parts together.
- on the parish — receiving parochial relief
- one-upmanship — the art or practice of achieving, demonstrating, or assuming superiority in one's rivalry with a friend or opponent by obtaining privilege, status, status symbols, etc.: the one-upmanship of getting into the president's car pool.
- onomatopoeias — Plural form of onomatopoeia.
- onus probandi — the burden of proof.
- onychophagist — the practice of biting one's nails, especially when done habitually and as a symptom of emotional disturbance.
- onychophorans — Plural form of onychophoran.
- open and shut — immediately obvious upon consideration; easily decided: an open-and-shut case of murder.
- open diapason — a full, rich outpouring of melodious sound.
- open sandwich — a sandwich served on only one slice of bread, without a covering slice.
- 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?].
- opera glasses — small binoculars
- 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
- oppositionary — the action of opposing, resisting, or combating.
- 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.
- ora pro nobis — a Latin invocation meaning pray for us
- orchesography — a written study of dancing
- 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.
- oscillographs — Plural form of oscillograph.
- 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.
- osteoplasties — Plural form of osteoplasty.
- ostreophagous — oyster-eating
- outwash plain — Geology. a broad, sloping landform built of coalesced deposits of outwash.