17-letter words containing o, p, e, n
- a grip on reality — If you say that someone has a grip on reality, you mean they recognize the true situation and do not have mistaken ideas about it.
- a sporting chance — If you have a sporting chance of doing something, it is quite likely that you will do that thing.
- absolute monopoly — a market situation in which there is only one supplier of a good or service for which there is no acceptable substitute.
- absolute pathname — (file system) A pathname relative to the root directory.
- absorption nebula — a cloud of interstellar gas and dust that absorbs and thus obscures the light from stars behind it, appearing as a dark patch in front of a bright nebula or in an otherwise bright area of sky.
- acanthopterygians — Plural form of acanthopterygian.
- acceptance region — Statistics. the set of values of a test statistic for which the null hypothesis is accepted.
- access permission — permission
- accessory pigment — any pigment in plants that can absorb light energy and pass the electrons along to the primary pigment which starts the process of photosynthesis.
- accounting period — a period of time for which accounts are drawn up
- acenaphthoquinone — (organic compound) A polycyclic aromatic quinone derived from acenaphthene, used as an intermediate for the manufacturing of dyes, pharmaceuticals and pesticides.
- act of parliament — a law that has been passed by both of the UK Houses of Parliament and has received royal assent
- active suspension — a type of suspension in a car that is controlled by an onboard computer and improves the vehicle's roadholding so that it takes corners, accelerates, and brakes more smoothly
- acupressure point — any of the specific points on the body where pressure is applied in acupressure
- adjective pronoun — a pronoun used as an adjective, as his in His dinner is ready.
- adjunct professor — a professor employed by a college or university for a specific purpose or length of time and often part-time.
- adoptive immunity — passive immunity resulting from the administration of sensitized lymphocytes from an immune donor.
- agent provocateur — An agent provocateur is a person who is employed by the government or the police to encourage certain groups of people to break the law, so they can arrest them or make them lose public support.
- air-transportable — that can be transported by aircraft: air-transportable equipment.
- alligator snapper — a large, freshwater snapping turtle (Macroclemys temmincki) of the SE U.S. and the Mississippi Valley, found chiefly in rivers and bayous: it may weigh up to 100 kg (220 lb)
- alpha-fetoprotein — a protein that forms in the liver of the human fetus. Excessive quantities in the amniotic fluid and maternal blood may indicate spina bifida in the fetus; low levels may point to Down's syndrome
- altamonte springs — a city in central Florida.
- alternating group — the subgroup consisting of all even permutations, of the group of all permutations of a finite set.
- ammonium sulphate — a white soluble crystalline solid used mainly as a fertilizer and in water purification. Formula: (NH4)2SO4
- analogue computer — (computer, hardware) A machine or electronic circuit designed to work on numerical data represented by some physical quantity (e.g. rotation or displacement) or electrical quantity (e.g. voltage or charge) which varies continuously, in contrast to digital signals which are either 0 or 1. For example, the turning of a wheel or changes in voltage can be used as input. Analogue computers are said to operate in real time and are used for research in design where many different shapes and speeds can be tried out quickly. A computer model of a car suspension allows the designer to see the effects of changing size, stiffness and damping.
- anchor escapement — an escapement in which wedge-shaped pallets engage with an escape wheel having pointed teeth, usually facing in the direction of revolution, so that the escape wheel recoils slightly at every release.
- aneroid barograph — an aneroid barometer equipped with an automatic recording mechanism.
- angular leaf spot — a disease of plants, characterized by angular, watery spots on the leaves and fruit, caused by any of several bacteria, as Pseudomonas lachrymans.
- anthropogenically — In an anthropogenic way.
- anthropogeography — a branch of anthropology dealing with the geographical distribution of humankind and the relationship between human beings and their environment.
- anthropomorphises — Third-person singular simple present indicative form of anthropomorphise.
- anthropomorphized — Simple past tense and past participle of anthropomorphize.
- anthroposemiotics — The study of human communication.
- anti-profiteering — a person who seeks or exacts exorbitant profits, especially through the sale of scarce or rationed goods.
- anticompetitively — In an anticompetitive manner.
- antiproliferation — opposing an increase in nuclear weapons, especially in allowing additional countries to obtain them.
- antiproliferative — of or relating to a substance used to prevent or retard the spread of cells, especially malignant cells, into surrounding tissues.
- apartment complex — An apartment complex is a group of buildings that contain apartments and are managed by the same company.
- apparent movement — the sensation of seeing movement when nothing actually moves in the environment, as when two neighbouring lights are switched on and off in rapid succession
- application layer — (networking) The top layer of the OSI seven layer model. This layer handles issues like network transparency, resource allocation and problem partitioning. The application layer is concerned with the user's view of the network (e.g. formatting electronic mail messages). The presentation layer provides the application layer with a familiar local representation of data independent of the format used on the network.
- appointed actuary — An appointed actuary is an actuary appointed by a life insurance company, whose main role is to carry out a regular valuation of the reserves held to pay future policy benefits.
- arsenic poisoning — poisoning by arsenic
- artificial person — a human being, whether an adult or child: The table seats four persons.
- asperger syndrome — a developmental disorder characterized by severely impaired social skills, repetitive behaviors, and often, a narrow set of interests, but not involving delayed development of linguistic and cognitive abilities: now considered one of the autism spectrum disorders.
- astral projection — the departure of the astral body from the physical body, in order to travel to the astral plane
- at one fell swoop — to sweep through the air, as a bird or a bat, especially down upon prey.
- at one's disposal — If you have something at your disposal, you are able to use it whenever you want, and for whatever purpose you want. If you say that you are at someone's disposal, you mean that you are willing to help them in any way you can.
- at one's own pace — If you do something at your own pace, you do it at a speed that is comfortable for you.
- at the expense of — If you achieve something at the expense of someone, you do it in a way which might cause them some harm or disadvantage.
- attraction sphere — centrosphere (sense 1)
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