20-letter words containing a, v, i, t, o

effective computable — (theory) A term describing a function for which there is an effective algorithm that correctly calculates the function. The algorithm must consist of a finite sequence of instructions.
electromagnetic wave — a wave of energy propagated in an electromagnetic field
embryo vitrification — a method of in vitro fertilization in which the embryo is exposed to a vitreous solution and frozen before being thawed and implanted into the uterus
environment variable — (programming, operating system) A variable that is bound in the current environment. When evaluating an expression in some environment, the evaluation of a variable consists of looking up its name in the environment and substituting its value. Most programming languages have some concept of an environment but in Unix shell scripts it has a specific meaning slightly different from other contexts. In shell scripts, environment variables are one kind of shell variable. They differ from local variables and command line arguments in that they are inheritted by a child process. Examples are the PATH variable that tells the shell the file system paths to search to find command executables and the TZ variable which contains the local time zone. The variable called "SHELL" specifies the type of shell being used. These variables are used by commands or shell scripts to discover things about the environment they are operating in. Environment variables can be changed or created by the user or a program. To see a list of environment variables type "setenv" at the csh or tcsh prompt or "set" at the sh, bash, jsh or ksh prompt. In other programming languages, e.g. functional programming languages, the environment is extended with new bindings when a function's parameters are bound to its actual arguments or when new variables are declared. In a block-structured procedural language, the environment usually consists of a linked list of activation records.
environmental health — the issues dealt with by the Environmental Health Department of a local authority, such as prevention of the spread of communicable diseases, food safety and hygiene, control of infestation by insects or rodents, etc
environmental impact — the impact on the environment created by an industry, service, plan, or project
equivalence relation — (mathematics) A relation R on a set including elements a, b, c, which is reflexive (a R a), symmetric (a R b => b R a) and transitive (a R b R c => a R c). An equivalence relation defines an equivalence class. See also partial equivalence relation.
every bit as good as — You say that one thing is every bit as good, interesting, or important as another to emphasize that the first thing is just as good, interesting, or important as the second.
five-a-side football — a version of soccer with five players in each team
formative assessment — ongoing assessment of a pupil's educational development within a particular subject area
front-end volatility — Front-end volatility is the ability of the fractions with lower boiling points, such as butane, to evaporate at normal temperatures.
generative phonology — a theory of phonology that uses a set of rules to derive phonetic representations from abstract underlying forms.
give a wide berth to — to keep clear of; avoid
give one's right arm — to be prepared to make any sacrifice
give someone the air — a mixture of nitrogen, oxygen, and minute amounts of other gases that surrounds the earth and forms its atmosphere.
gravitational radius — Schwarzschild radius.
great northern diver — a large northern bird, Gavia immer, with a black-and-white chequered back and a black head and neck in summer: family Gaviidae (divers)
guided visualization — a relaxation technique in which words, sounds, etc., are used to evoke positive mental images, feelings, and thoughts.
heat of vaporization — the heat absorbed per unit mass of a given material at its boiling point that completely converts the material to a gas at the same temperature: equal to the heat of condensation.
in the event of/that — You use in the event of, in the event that, and in that event when you are talking about a possible future situation, especially when you are planning what to do if it occurs.
in-service education — training and education given to employed teachers throughout their career
information overload — an excess of incoming information, as might confront a pedestrian on a crowded city street, that forces one to be selective in the information received and retained.
intravenous drug use — the injection of drugs intravenously
inventory adjustment — Inventory adjustments are increases or decreases made in inventory to account for theft, loss, breakages, and errors in the amount or number of items received.
java development kit — (language, compiler) (JDK) A free Sun Microsystems product which provides the environment required for programming in Java. The JDK is available for a variety of platforms, but most notably Sun Solaris and Microsoft Windows.
keratoconjunctivitis — inflammation of the cornea and conjunctiva.
kick over the traces — either of the two straps, ropes, or chains by which a carriage, wagon, or the like is drawn by a harnessed horse or other draft animal.
lacto-ovo-vegetarian — Also called lactovarian [lak-tuh-vair-ee-uh n] /ˌlæk təˈvɛər i ən/ (Show IPA), ovolactarian, ovo-lacto-vegetarian. a vegetarian whose diet includes dairy products and eggs.
maternal deprivation — the lack of a mother in a child's life, considered a cause of psychological problems later in life
modify a reservation — If you modify a reservation, you change a detail of a booking because someone who has booked a room has asked you to.
multiplicative group — a group in which the operation of the group is multiplication.
mum-and-dad investor — a small-scale non-professional investor
nikkei stock average — an index of prices on the Tokyo Stock Exchange
non-volatile storage — (storage) (NVS, persistent storage, memory) A term describing a storage device whose contents are preserved when its power is off. Storage using magnetic media (e.g. magnetic disks, magnetic tape or bubble memory) is normally non-volatile by nature whereas semiconductor memories (static RAM and especially dynamic RAM) are normally volatile but can be made into non-volatile storage by having a (rechargable) battery permanently connected. Other examples of non-volatile storage are EEPROM, CD-ROM, paper tape and punched cards.
nondirective therapy — client-centered therapy.
north canadian river — a river in NE New Mexico, E Texas, and E Oklahoma, flowing SE to the Canadian River. 760 miles (1223 km) long.
objective relativism — the doctrine that knowledge of real objects is relative to the individual.
on o's best behavior — If someone is on their best behavior, they are trying very hard to behave well.
operator overloading — overloading
oscillating universe — a variant model of the closed universe in which the universe undergoes cycles of expansion and contraction.
over-intellectualize — to seek or consider the rational content or form of.
overenthusiastically — With excessive enthusiasm.
ovo-lacto vegetarian — a vegetarian who eats eggs and dairy products
ovo-lacto-vegetarian — lacto-ovo-vegetarian.
political convention — a meeting of a political party, esp to select party candidates
population inversion — a condition of matter in which more electrons are in a high energy state than in a lower energy state, as is required for the operation of a laser.
possessive adjective — See at possessive (def 4a).
postal delivery zone — zone (def 10).
pound cost averaging — a method of accumulating capital by investing a fixed sum in a particular security at regular intervals, in order to achieve an average purchase price below the arithmetic average of the market prices on the purchase dates
predicate nominative — (in Latin, Greek, and certain other languages) a predicate noun or adjective in the nominative case.

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