13-letter words containing o, s, c, i, t
- obstructively — In an obstructive manner.
- occasionalist — a person who subscribes to the theory of occasionalism
- occasionality — the condition or character of being infrequent or intended for a specific occasion, or that which is infrequent or intended for a specific occasion
- occidentalism — Occidental character or characteristics.
- oceanic crust — the brown, hard outer portion or surface of a loaf or slice of bread (distinguished from crumb).
- octogenarians — Plural form of octogenarian.
- odontoblastic — Relating to odontoblasts.
- olfactologist — a medical specialist in the sense of smell
- oligopolistic — the market condition that exists when there are few sellers, as a result of which they can greatly influence price and other market factors. Compare duopoly, monopoly (def 1).
- on-off switch — electrical or electronic device: control knob
- onanistically — In an onanistic manner.
- oneiroscopist — a person who specialises in studying and interpreting dreams
- onomastically — In an onomastic way.
- onychophagist — the practice of biting one's nails, especially when done habitually and as a symptom of emotional disturbance.
- 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.
- opportunistic — adhering to a policy of opportunism; practicing opportunism.
- 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.
- 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.
- orchidologist — someone who is knowledgeable in orchidology
- orchiectomies — Plural form of orchiectomy.
- orgiastically — In an orgiastic fashion.
- ornithischian — any herbivorous dinosaur of the order Ornithischia, having a pelvis resembling that of a bird. Compare saurischian.
- orthosilicate — a silicate mineral
- oscillational — characterized by oscillation
- oscillometric — an instrument for measuring oscillations, especially those of the arterial pulse.
- ossifications — Plural form of ossification.
- ostracisation — Alternative form of ostracization.
- ostracization — to exclude, by general consent, from society, friendship, conversation, privileges, etc.: His friends ostracized him after his father's arrest.
- ostreiculture — the breeding of oysters
- outdistancing — Present participle of outdistance.
- outprocessing — to end a military tour of duty, accompanied by necessary paperwork: All enlisted soldiers out-process as a class.
- outstretching — Present participle of outstretch.
- ovariectomies — Plural form of ovariectomy.
- over-cautious — excessively or unnecessarily cautious: Sometimes it doesn't pay to be overcautious in business.
- oversecretion — (in a cell or gland) the act or process of separating, elaborating, and releasing a substance that fulfills some function within the organism or undergoes excretion.
- palaeocrystic — consisting of former glacial formation
- paleo-asiatic — a member of any of various Mongoloid peoples of northeastern Asia.
- pantisocratic — relating to pantisocracy
- past historic — the simple past
- pentastichous — (of plant leaves) arranged in five vertical rows
- pentatonicism — the use of a five-tone scale.
- percussionist — a musician who plays percussion instruments.
- perfectionism — any of various doctrines holding that religious, moral, social, or political perfection is attainable.