20-letter words containing i, l, t, r, o
- district high school — a school in a rural area that includes primary and post-primary classes
- district of columbia — a federal area in the E United States, on the Potomac, coextensive with the federal capital, Washington. 69 sq. mi. (179 sq. km). Abbreviation: DC (for use with zip code), D.C.
- doctor of philosophy — Also called doctorate. the highest degree awarded by a graduate school, usually to a person who has completed at least three years of graduate study and a dissertation approved by a board of professors.
- double fertilization — the fertilization process characteristic of flowering plants, in which one sperm cell of a pollen grain fertilizes an egg cell while a second fuses with two polar nuclei to produce a triploid body that gives rise to the endosperm.
- double-trailer truck — tandem trailer (def 1).
- ecclesiastical court — a church court in ecclesiastical matters, presided over by members of the clergy and usually having no compulsory jurisdiction.
- ecological footprint — a mark left by the shod or unshod foot, as in earth or sand.
- economic rationalism — an economic policy based on the efficiency of market forces, characterized by minimal government intervention, tax cuts, privatization, and deregulation of labour markets
- eight queens problem — eight queens puzzle
- eleanor of aquitaine — ?1122–1204, queen of France (1137–52) by her marriage to Louis VII and queen of England (1154–89) by her marriage to Henry II; mother of the English kings Richard I and John
- electoral boundaries — the way that a country or area is divided for the purposes of voting in an election
- electrocardiographic — Of or pertaining to an electrocardiogram (ECG) or electrocardiograph.
- electrode efficiency — the ratio of the amount of metal deposited in an electrolytic cell to that theoretically deposited according to Faraday's laws
- electrohydrodynamics — (physics) the study of the dynamics of electrically conducting fluid.
- electromagnetic pump — a device for pumping liquid metals by placing a pipe between the poles of an electromagnet and passing a current through the liquid metal
- electromagnetic unit — any unit that belongs to a system of electrical cgs units in which the magnetic constant is given the value of unity and is taken as a pure number
- electromagnetic wave — a wave of energy propagated in an electromagnetic field
- electromotive series — a series of the metals, together with hydrogen, ranged in the order of their electrode potentials
- electronic footprint — data that identifies a computer that has connected to a particular website
- electronic signature — electronic proof of a person's identity
- electrophysiological — Of or pertaining to electrophysiology.
- elementary education — the first six to eight years of a child's education
- elephant in the room — an obvious truth deliberately ignored by all parties in a situation
- elizabeth of hungary — Saint. 1207–31, Hungarian princess who devoted herself to charity and asceticism. Feast day: Nov 17 and 19
- employer's liability — an employer's legal responsibility to pay damages to an employee who has been injured or who has contracted an illness because of the work he or she does
- endorsement in blank — an endorsement on a bill of exchange, cheque, etc, naming no payee and thus making the endorsed sum payable to the bearer
- entry qualifications — the qualifications people wishing to enter an organization, university, etc, have to have
- 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
- epitaxial transistor — a transistor made by depositing a thin pure layer of semiconductor material (epitaxial layer) onto a crystalline support by epitaxy. The layer acts as one of the electrode regions, usually the collector
- equilibrium constant — The equilibrium constant is the ratio between the amount of reactants and the amount of product for a particular chemical reaction, used to calculate chemical behavior.
- 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.
- estrela mountain dog — a sturdy well-built dog of a Portuguese breed with a long thick coat and a thick tuft of hair round the neck, often used as a guard dog
- exclusive or circuit — a computer logic circuit having two or more input wires and one output wire and giving a high-voltage output signal if a low-voltage signal is fed to one or more, but not all, of the input wires
- external respiration — exchange of oxygen and carbon dioxide across external or respiratory surfaces, as gills or lungs, in multicellular organisms
- federal constitution — Constitution of the United States.
- federation of malaya — a federation of the nine Malay States of the Malay Peninsula and two of the Straits Settlements (Malacca and Penang): formed in 1948: became part of the British Commonwealth in 1957 and joined Malaysia in 1963
- fermentation alcohol — alcohol (def 1).
- fermentation-alcohol — Also called ethyl alcohol, grain alcohol, ethanol, fermentation alcohol. a colorless, limpid, volatile, flammable, water-miscible liquid, C 2 H 5 OH, having an etherlike odor and pungent, burning taste, the intoxicating principle of fermented liquors, produced by yeast fermentation of certain carbohydrates, as grains, molasses, starch, or sugar, or obtained synthetically by hydration of ethylene or as a by-product of certain hydrocarbon syntheses: used chiefly as a solvent in the extraction of specific substances, in beverages, medicines, organic synthesis, lotions, tonics, colognes, rubbing compounds, as an automobile radiator antifreeze, and as a rocket fuel. Compare denatured alcohol, methyl alcohol.
- fight for one's life — Someone who is fighting for their life is making a great effort to stay alive, either when they are being physically attacked or when they are very ill.
- file descriptor leak — (programming) (Or "fd leak" /F D leek/) A kind of programming bug analogous to a core leak, in which a program fails to close file descriptors ("fd"s) after file operations are completed, and thus eventually runs out of them. See leak.
- financial controller — a senior executive in usually commercial organization who is in charge of financial affairs and oversees such things as the preparation of budgets and accounts
- first earl of cromer — 1st Earl of, Evelyn Baring.
- first world problems — If you say that someone has First World problems, you mean that their problems are not really very important.
- flight data recorder — a recording device that records relevant data during an aircraft's flight
- floodlight projector — a powerful lamp having a reflector curved to produce a floodlight.
- florence nightingale — Florence ("the Lady with the Lamp") 1820–1910, English nurse: reformer of hospital conditions and procedures; reorganizer of nurse's training programs.
- for all one is worth — good or important enough to justify (what is specified): advice worth taking; a place worth visiting.
- for sb's delectation — If you do something for someone's delectation, you do it to give them enjoyment or pleasure.