12-letter words containing o, p, e, n, a
- appendectomy — the surgical removal of the vermiform appendix
- apperception — the attainment of full awareness of a sensation or idea
- apple newton — (computer) A Personal Digital Assistant produced by Apple Computer. The Newton provides a clever, user-friendly interface and relies solely on pen-based input. Eagerly anticipated, the Newton uses handwriting recognition software to "learn" the users handwriting and provide reliable character recognition. Various third-party software applications are available and add-on peripherals like wireless modems for Internet access are being sold by Apple Computer, Inc. and its licensees.
- appleknocker — Northern U.S. a rustic.
- appointments — Plural form of appointment.
- appositeness — The state of being apposite.
- appreciation — Appreciation of something is the recognition and enjoyment of its good qualities.
- apprehension — Apprehension is a feeling of fear that something bad may happen.
- approachment — (archaic) approach.
- arachnophobe — a person who is afraid of spiders
- araneomorphs — Plural form of araneomorph.
- archiphoneme — an abstract linguistic unit representing two or more phonemes when the distinction between these has been neutralized: conventionally shown by a capital letter within slashes, as /T/ for /t/ and /d/ in German Rat and Rad
- aristophanes — ?448–?380 bc, Greek comic dramatist, who satirized leading contemporary figures such as Socrates and Euripides. Eleven of his plays are extant, including The Clouds, The Frogs, The Birds, and Lysistrata
- arpeggiation — the writing, playing or singing of arpeggios
- arseno group — the bivalent group −As=As−.
- arsenopyrite — a white or grey metallic mineral consisting of a sulphide of iron and arsenic that forms monoclinic crystals with an orthorhombic shape: an ore of arsenic. Formula: FeAsS
- attorneyship — The office or profession of an attorney.
- azathioprine — a synthetic drug that suppresses the normal immune responses of the body and is administered orally during and after organ transplantation and also in certain types of autoimmune disease. Formula: C9H7N7O2S
- azophenylene — phenazine.
- baden-powell — Robert Stephenson Smyth (smɪθ, smaɪθ), 1st Baron Baden-Powell. 1857–1941, British general, noted for his defence of Mafeking (1899–1900) in the Boer War; founder of the Boy Scouts (1908) and (with his sister Agnes) the Girl Guides (1910)
- band of hope — a society promoting lifelong abstention from alcohol among young people: founded in Britain in 1847
- bank deposit — money placed in a bank account
- bean sprouts — the sprouts of newly germinated mung beans, eaten as a vegetable, esp in Chinese dishes
- beat up (on) — to give a beating to; thrash
- benzal group — the bivalent group C 7 H 6 –, derived from benzaldehyde.
- benzoapyrene — a carcinogenic chemical in tobacco smoke
- betanaphthol — a colorless, crystalline isomer of naphthol, C10H8O, used as an antiseptic and parasiticide
- bipropellant — a rocket propellant consisting of two substances, usually a fuel and an oxidizer
- booklet pane — Philately. any of a number of panes or small pages of postage stamps, stapled together into a booklet for the convenience of users.
- branch depot — one of a several depots receiving stock from the same central supplier
- caesalpinoid — of, relating to, or belonging to the Caesalpinoideae, a mainly tropical subfamily of leguminous plants that have irregular flowers: includes carob, senna, brazil, cassia, and poinciana
- camera phone — A camera phone is a mobile phone that can also take photographs.
- cameraperson — a camera operator
- campo grande — a city in SW Brazil, capital of Mato Grosso do Sul state on the São Paulo–Corumbá railway: market centre. Pop: 746 000 (2005 est)
- cancelpoodle — (messaging) (Or Cancelbunny) A manifestation of the Cancelmoose in the form of a more selective (and probably not automated) way to cancel Usenet articles. The term became common during the alt.religion.scientology wars of the mid-90s, during which Cancelpoodles were used. The "poodle" part is an allusion to one of the parties obliquely involved in the fray, who an earlier well-known witticism had compared to "a psychotic poodle".
- cancerphobia — an excessive fear of getting cancer
- canine corps — a military or law enforcement body which uses dogs for the detection of explosives or drugs or for security, tracking, etc
- canton crepe — a fine crinkled silk or rayon crepe fabric, slightly heavier than crepe de Chine
- cape comorin — a headland at the southernmost point of India, in Tamil Nadu state
- cape nordkyn — a cape in N Norway: the northernmost point of the European mainland
- cape sounion — Cape, a cape in E central Greece, SE of Athens, at the tip of the Attica peninsula, in W Aegean Sea.
- capricornean — born under or characteristic of Capricorn
- captiousness — The state of being captious.
- carbon paper — Carbon paper is thin paper with a dark substance on one side. You use it to make copies of letters, bills, and other papers.
- carpetmonger — a person who frequently visits women's boudoirs
- carpool lane — a lane of a major road or motorway that is reserved for vehicles with a minimum number of passengers, designed to encourage carpooling
- cattleperson — Someone who works with, or rears cattle.
- cefoperazone — A cephalosporin antibiotic.
- ceratopsians — Plural form of ceratopsian.
- chairpersons — Plural form of chairperson.