12-letter words containing i, s, o, p
- nonpoisonous — full of or containing poison: poisonous air; a poisonous substance.
- nonpsychotic — Psychiatry. characterized by or afflicted with psychosis. Synonyms: (in nontechnical usage) insane, psychopathic, lunatic, mentally ill; mad, disturbed, deranged, demented, non compos mentis. Antonyms: sane; compos mentis, clearheaded, lucid.
- nonpurposive — lacking purpose
- nonspherical — not spherical
- nonspiritual — Not spiritual.
- 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.
- obreptitious — having the characteristics of acquiring something by deceitful means
- observership — someone or something that observes.
- octapeptides — Plural form of octapeptide.
- octastrophic — having or containing eight verses or strophes
- oesophagitis — Alternative spelling of esophagitis.
- office space — part of a building for business use
- oil deposits — reserves of petroleum found underground (or under the sea)
- oil pressure — force that keeps engine lubricated
- oilseed rape — Oilseed rape is a plant with yellow flowers which is grown as a crop. Its seeds are crushed to make cooking oil.
- old prussian — a Baltic language extinct since the 17th century. Abbreviation: OPruss.
- oligophagous — (especially of insects) eating only a few types of food.
- oligopolists — Plural form of oligopolist.
- oligopsonies — Plural form of oligopsony.
- oligospermia — (medicine) Low volume of semen.
- olympic-size — of the dimensions or length prescribed for the Olympic Games and other major athletic competitions: an Olympic-size speed-skating oval.
- ombrophilous — (of plants) tolerant of wet conditions
- 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.
- operatorship — (in the oil and gas industries) the right to operate a well, field, or other oil source.
- ophiolatrous — of, relating to, or practising snake-worshipping
- ophiophagous — eating snakes.
- ophiophilist — a person who loves snakes
- ophthalmitis — ophthalmia.
- opinionators — Plural form of opinionator.
- opisthodomos — Also called posticum. a small room in the cella of a classical temple, as for a treasury.
- opisthograph — a manuscript, parchment, or book having writing on both sides of the leaves.
- 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.
- opposability — capable of being placed opposite to something else: the opposable thumb of primates.
- opposite sex — man if woman, woman if man
- oppositeness — The state or condition of being opposite.
- oppositional — the action of opposing, resisting, or combating.
- oppressional — Exhibiting or relating to oppression.
- oppressively — burdensome, unjustly harsh, or tyrannical: an oppressive king; oppressive laws.
- opsonisation — Alternative form of opsonization.