12-letter words containing n, o, a, p, r
- cryptomnesia — the reappearance of a suppressed or forgotten memory which is mistaken for a new experience
- cryptomonads — Plural form of cryptomonad.
- cuprammonium — an ion of copper oxide used (in solution) in the manufacture of rayon and other man-made fibres
- curtain pole — a pole from which a curtain is hung in front of a window, door, etc
- cyclopropane — a colourless flammable gaseous hydrocarbon, used in medicine as an anaesthetic; trimethylene. It is a cycloalkane with molecules containing rings of three carbon atoms. Formula: C3H6; boiling pt: –34°C
- d'anjou pear — Anjou pear
- danger point — the point at which something ceases to be safe
- daphnephoria — an ancient Greek festival in honor of Apollo.
- deaspiration — the act of deaspirating
- demonography — a treatise on demons.
- deportations — Plural form of deportation.
- depreciation — the reduction in value of a fixed asset due to use, obsolescence, etc
- depredations — the act of preying upon or plundering; robbery; ravage.
- deprivations — Plural form of deprivation.
- deprotonated — Simple past tense and past participle of deprotonate.
- deuteranopia — a form of colour blindness in which there is a tendency to confuse blues and greens, and greens and reds, and in which sensitivity to green is reduced
- dictyopteran — any insect of the order Dictyoptera, which comprises the cockroaches and mantises
- dinosaur pen — A traditional mainframe computer room complete with raised flooring, special power, its own ultra-heavy-duty air conditioning, and a side order of Halon fire extinguishers. See boa.
- diprionidian — (of a graptolite) with a row of cellules or serrations on both sides
- dipropellant — bipropellant.
- disapproving — Expressing an unfavorable opinion.
- disoperation — a relationship between two organisms in a community that is harmful to both
- dispensatory — a book in which the composition, preparation, and uses of medicinal substances are described; a nonofficial pharmacopoeia.
- dolphinarium — An aquarium in which dolphins are kept and trained for public entertainment.
- domino paper — a marbleized or figured decorative paper, used for wallpaper, end papers, etc., printed from wood blocks and colored by hand.
- dopaminergic — activated by or sensitive to dopamine.
- doppelganger — a ghostly double or counterpart of a living person.
- doppleganger — Misspelling of doppelganger.
- draftsperson — a person employed in making mechanical drawings, especially in an architectural or engineering firm.
- drapetomania — (dated) an overwhelming urge to run away (from home, a bad situation, responsibility, etc.).
- drop curtain — a curtain that is lowered into position from the flies.
- drop initial — inset initial.
- emancipators — Plural form of emancipator.
- emancipatory — Of or pertaining to emancipation or to an emancipator.
- enantiomorph — Each of two crystalline or other geometric forms that are mirror images of each other.
- enantiotropy — the possibility for stable polymorphs to exist in different states on either side of a transition-point temperature
- endoparasite — A parasite, such as a tapeworm, that lives inside its host.
- entoplastral — relating to an entoplastron
- entoplastron — the median plate of a turtle's plastron
- entropically — By means of or in relation to entropy.
- epanorthosis — (rhetoric) A rhetorical device or element in which a speaker or writer retracts a word that has been spoken and substitutes a stronger or more suitable word; often done for emphasis or sarcasm.
- epistolarian — A writer of epistles.
- epoxypropane — (organic compound) propylene oxide.
- equiparation — the act of regarding as the same; the act of comparing
- eriskay pony — a breed of medium-sized pony, typically grey, with a dense waterproof coat. The Eriskay is the only surviving variety of the native ponies of the Western Isles of Scotland
- erythropenia — A decrease in the number of erythrocytes, associated with anemia.
- ethnographer — One who practices ethnography.
- ethnographic — Relating to ethnography.
- evaporations — Plural form of evaporation.
- exasperation — A feeling of intense irritation or annoyance.