12-letter words containing o, p, s, n, i
- np-hilarious — (humour) An algorithm whose complexity is a joke, either literally, as in BogoSort, or metaphorically.
- nucleocapsid — the nucleic acid core and surrounding capsid of a virus; the basic viral structure.
- nucleophiles — Plural form of nucleophile.
- nyctitropism — tending to assume at or just before nightfall positions unlike those maintained during the day, as the leaves or flowers of certain plants.
- old prussian — a Baltic language extinct since the 17th century. Abbreviation: OPruss.
- oligopsonies — Plural form of oligopsony.
- omnipresence — present everywhere at the same time: the omnipresent God.
- on shipboard — on board a ship
- on suspicion — as a suspect
- one's pigeon — one's special concern, or business
- onion-shaped — bulb-shaped; shaped like an onion
- opera singer — a professional singer of opera
- operationism — the doctrine that the meaning of a scientific term, concept, or proposition consists of the operation or operations performed in defining or demonstrating it.
- opinionators — Plural form of opinionator.
- opisthotonic — of or relating to opisthotonos
- opisthotonos — Spasm of the muscles causing backward arching of the head, neck, and spine, as in severe tetanus, some kinds of meningitis, and strychnine poisoning.
- opportunists — Plural form of opportunist.
- oppositeness — The state or condition of being opposite.
- oppositional — the action of opposing, resisting, or combating.
- oppressional — Exhibiting or relating to oppression.
- opsonisation — Alternative form of opsonization.
- opsonization — to increase the susceptibility of (bacteria) to ingestion by phagocytes.
- optimisation — Alternative spelling of optimization.
- optogenetics — (genetics) A science that combines optics and genetics to probe neural circuits.
- ornithopters — Plural form of ornithopter.
- ornithoscopy — divination from the observation of birds
- outcroppings — Plural form of outcropping.
- outpouchings — Plural form of outpouching.
- outspreading — Present participle of outspread.
- outstripping — to outdo; surpass; excel.
- overripeness — the state of being too ripe
- overshipment — an act or instance of shipping freight or cargo.
- overspending — the act or an instance of spending in excess of one's desires or what one can afford or is allocated
- packinghouse — a building where foodstuffs are packed
- paedodontics — the branch of dentistry that focuses on the care of children's teeth
- paedogenesis — sexual reproduction in an animal that retains its larval features
- palindromist — a word, line, verse, number, sentence, etc., reading the same backward as forward, as Madam, I'm Adam or Poor Dan is in a droop.
- palynologist — the study of live and fossil spores, pollen grains, and similar plant structures.
- panning shot — pan3 (def 6).
- pantisocracy — a community, social group, etc, in which all have rule and everyone is equal
- pantophagist — an omnivore
- parachronism — a chronological error in which a person, event, etc., is assigned a date later than the actual one.
- parasol pine — stone pine (def 1).
- parasphenoid — a bone next to the sphenoid bone in the skull of some animals
- parkinsonian — (sometimes initial capital letter) of, related to, or resembling Parkinson's disease.
- parkinsonism — Parkinson's disease.
- paronomastic — the use of a word in different senses or the use of words similar in sound to achieve a specific effect, as humor or a dual meaning; punning.
- parsimonious — characterized by or showing parsimony; frugal or stingy.
- parting shot — a threat, insult, condemnation, sarcastic retort, or the like, uttered upon leaving.
- pas d'action — a dramatic, pantomimic dance sequence serving to advance the plot.