13-letter words containing a, p, o, i
- atmospherical — pertaining to, existing in, or consisting of the atmosphere: atmospheric vapors.
- atomic weapon — a weapon in which energy is provided by nuclear fission
- auction pitch — a variety of all fours in which players bid to determine the trump or pitch.
- audiographics — audiographic teleconferencing
- autapomorphic — (biology) Describing any characteristic that has evolved in only a single species (or other taxon).
- autobiography — Your autobiography is an account of your life, which you write yourself.
- autographical — Relating to, or used in, the process of autography.
- autopolyploid — (of cells, organisms, etc) having more than two sets of haploid chromosomes inherited from a single species
- baby primrose — a tender primrose, Primula forbesii, native to China and Burma, having white, hairy leaves and rose- or lilac-colored flowers with a yellow center.
- bacillophobia — The fear of microbes. Also known as germaphobia.
- backing group — a group of musicians providing an instrumental or vocal accompaniment for a pop singer
- bacteriophage — a virus that is parasitic in a bacterium and multiplies within its host, which is destroyed when the new viruses are released
- bacteriophagy — the action of a bacteriophage
- bacterioscopy — the examination of bacteria with a microscope.
- badminton cup — a long refreshing drink of claret with soda water and sugar
- baking powder — Baking powder is an ingredient used in cake making. It causes cakes to rise when they are in the oven.
- ballistospore — a spore, esp a fungal spore, that is forcefully ejected from its source
- base hospital — a hospital serving a large rural area
- basic process — Military. basic training. a soldier or airman receiving basic training.
- basidiospores — Plural form of basidiospore.
- benthopelagic — relating to species living at the bottom of the sea
- bibliographer — an expert in bibliography
- bibliographic — a complete or selective list of works compiled upon some common principle, as authorship, subject, place of publication, or printer.
- bibliophagist — a person who devours books
- bibliotherapy — the use of reading as therapy
- binary weapon — a chemical weapon consisting of a projectile containing two substances separately that mix to produce a lethal agent when the projectile is fired
- bio-autograph — an analytical technique in which organic compounds are separated by chromatography and identified by studying their effects on microorganisms.
- bioautography — an analytical technique in which organic compounds are separated by chromatography and identified by studying their effects on microorganisms.
- biocompatible — not rejected by the body
- biogeographer — a person who is knowledgeable about biogeography
- bird of peace — a dove.
- block capital — a sans-serif letter with lines of uniform weight.
- boarding pass — A boarding pass is a card that a passenger must have when boarding a plane or a boat.
- bomb disposal — Bomb disposal is the job of dealing with bombs which have not exploded, by taking out the fuse or by blowing them up in a controlled explosion.
- braking power — the ability of a braking system to cause a vehicle to come to a halt
- bring to pass — to cause to happen
- broca-aphasia — a type of aphasia caused by a lesion in Broca's area of the brain, characterized by misarticulated speech and lack of grammatical morphemes.
- bromide paper — a type of photographic paper coated with an emulsion of silver bromide usually containing a small quantity of silver iodide
- buffalo chips — the dried dung of buffalo used as fuel, especially by early settlers on the western plains.
- buffalo plaid — a plaid with large blocks formed by the intersection of two different-color yarns, typically red and black.
- by reputation — If you know someone by reputation, you have never met them but you have heard of their reputation.
- c corporation — A C corporation is a type of corporation which is taxed on its income.
- cacographical — Synonym of cacographic.
- caesaropapism — the theory that the state should have authority over the church in ecclesiastical matters; Erastianism
- cainotophobia — Alternative form of cainophobia.
- camp fire boy — a boy who is a member of the Campfire Boys and Girls. Compare Camp Fire Girl.
- campaniliform — Alternative form of campaniform.
- campanologist — the principles or art of making bells, bell ringing, etc.
- camping stool — a stool which is suitable for use in temporary quarters, on holiday, etc, esp by being portable and easy to set up
- camping stove — a portable stove powered by butane gas canisters, designed to be used for cooking while camping