13-letter words containing s, a, p, i, o
- nondiapausing — lacking a diapause
- nondisposable — Not disposable.
- nonpassionate — Not passionate.
- nonperishable — not subject to rapid deterioration or decay: A supply of nonperishable food was kept for emergencies.
- nonpractising — of or relating to a person who no longer observes or pursues his or her religious faith
- 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.
- nucleocapsids — Plural form of nucleocapsid.
- nucleoplasmic — Of or pertaining to nucleoplasm.
- nymphomaniacs — Plural form of nymphomaniac.
- ocean springs — a town in SE Mississippi.
- 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.
- 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.
- open diapason — a full, rich outpouring of melodious sound.
- open sandwich — a sandwich served on only one slice of bread, without a covering slice.
- 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.
- 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
- 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.
- outwash plain — Geology. a broad, sloping landform built of coalesced deposits of outwash.
- overappraisal — An appraisal that overvalues something.
- overemphasise — (British) alternative spelling of overemphasize.
- overemphasize — to emphasize excessively.
- overexpansion — the act or process of expanding.
- ovipositional — pertaining to the laying of eggs through an ovipositor
- ovoviviparous — producing eggs that are hatched within the body, so that the young are born alive but without placental attachment, as certain reptiles or fishes.
- pablo picasso — Pablo [pah-bloh;; Spanish pah-vlaw] /ˈpɑ bloʊ;; Spanish ˈpɑ vlɔ/ (Show IPA), 1881–1973, Spanish painter and sculptor in France.
- packing house — A packing house is a company that processes and packs food, especially meat, to be sold.
- paedomorphism — the continuation of juvenile characteristics in the adult stage
- painted horse — paint (def 6).
- palaeocrystic — consisting of former glacial formation