13-letter words containing a, p, e
- at knifepoint — If you are attacked or robbed at knifepoint, someone threatens you with a knife while they attack or steal from you.
- at peace with — If you are at peace with yourself or at peace with the world, you feel calm and contented, and you have no emotional conflicts within yourself or with other people.
- atmospherical — pertaining to, existing in, or consisting of the atmosphere: atmospheric vapors.
- atomic weapon — a weapon in which energy is provided by nuclear fission
- atypicalities — not typical; not conforming to the type; irregular; abnormal: atypical behavior; a flower atypical of the species.
- austrian pine — an evergreen tree, Pina nigra austriaca
- autocephalous — (of an Eastern Christian Church) governed by its own national synods and appointing its own patriarchs or prelates
- autoprojector — (theory) A self-applicable partial evaluator.
- autoresponder — A program that automatically generates a set response to all messages sent to a particular e-mail address.
- average speed — a scalar measure of the rate of movement of a body expressed as the distance travelled divided by the time taken
- awe-inspiring — If you describe someone or something as awe-inspiring, you are emphasizing that you think that they are remarkable and amazing, although sometimes rather frightening.
- baby elephant — a very young elephant
- 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.
- back pressure — the pressure that opposes the motion of a piston on its exhaust stroke in an internal-combustion engine
- backpedalling — to retard the forward motion by pressing backward on the pedal, especially of a bicycle with coaster brakes.
- backspace key — a key on a typewriter or computer keyboard that makes the carriage or cursor move backwards one space
- 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.
- baking powder — Baking powder is an ingredient used in cake making. It causes cakes to rise when they are in the oven.
- balanced step — any of a series of staircase winders so planned that they are nearly as wide at the inside of the stair as the adjacent fliers.
- ballistospore — a spore, esp a fungal spore, that is forcefully ejected from its source
- balneotherapy — the treatment of disease by bathing, esp to improve limb mobility in arthritic and neuromuscular disorders
- balsam spruce — either of two North American coniferous trees of the genus Picea, P. pungens (the blue spruce) or P. engelmanni
- banana spider — a large, yellowish, tropical crab spider (Heteropoda venatoria) occasionally found in bunches of bananas shipped to the Temperate Zones
- band spectrum — a spectrum consisting of a number of bands of closely spaced lines that are associated with emission or absorption of radiation by molecules
- banded purple — any color having components of both red and blue, such as lavender, especially one deep in tone.
- bandspreading — an additional tuning control in some radio receivers whereby a selected narrow band of frequencies can be spread over a wider frequency band, in order to give finer control of tuning
- barbary sheep — aoudad
- barber's pole — a sign outside a barber's shop consisting of a pole painted with red and white spiral stripes
- barbershopper — a member of a barbershop singing group.
- bargain price — a low price
- barley stripe — a disease of barley, characterized by blighted heads and chlorotic, brown, or frayed stripes on the leaves, caused by a fungus, Helminthosporium gramineum.
- baroreceptors — Plural form of baroreceptor.
- barred spiral — a spiral galaxy in which the arms originate at the ends of a bar-shaped nucleus
- barrel-shaped — having the shape of a barrel
- barristership — the office of a barrister
- bartlett pear — a large, juicy variety of pear
- base hospital — a hospital serving a large rural area
- basic plumage — the plumage assumed by an adult bird at its complete, usually annual, molt.
- basic process — Military. basic training. a soldier or airman receiving basic training.
- basidiospores — Plural form of basidiospore.
- bass response — the response of an audio reproduction system or component to low frequencies
- batch-process — to perform batch processing on (files)
- bay of naples — an inlet of the Tyrrhenian Sea in the SW coast of Italy
- bay of plenty — a large bay of the Pacific on the NE coast of the North Island, New Zealand
- be upstanding — (in a court of law) a direction to all persons present to rise to their feet before the judge enters or leaves the court
- beam splitter — a system that divides a beam of light, electrons, etc, into two or more paths
- bear the palm — to be the winner; take the prize
- bearing plate — a heavy metal plate for receiving and distributing concentrated weight, as from a column or one end of a truss.