18-letter words containing a, b, i, r
- invisible earnings — earnings from services provided rather than goods
- ionization chamber — a device for detecting and measuring ionizing radiation, consisting of a tube containing a low pressure gas and two electrodes between which a high voltage is maintained. The current between the electrodes is a function of the intensity of the radiation
- irreconcilableness — The quality of being irreconcilable; irreconcilability; incompatibility; incongruity.
- irregular variable — a variable star whose brightness variation is irregular.
- irreproachableness — The quality or state of being irreproachable; integrity; innocence.
- isabella of france — 1292–1358, wife (1308–27) of Edward II of England, whom, aided by her lover, Roger de Mortimer, she deposed; mother of Edward III
- israel ben eliezer — (Israel ben Eliezer"Besht") c1700–60, Ukrainian teacher and religious leader: founder of the Hasidic movement of Judaism.
- jacobite rebellion — the unsuccessful Jacobite rising of 1715 led by James Francis Edward Stuart
- james baird weaver — James Baird, 1833–1912, U.S. politician: congressman 1879–81, 1885–89.
- kakorrhaphiophobia — (rare) the fear of failure or defeat.
- kirtland's warbler — a wood warbler, Dendroica kirtlandii, breeding only in north-central Michigan and wintering in the Bahamas, bluish gray above, striped with black and pale yellow below: an endangered species.
- knotted cranesbill — a British wildflower, Geranium nodosum, an meadow geranium with bright pink or purple flowers
- labeled bracketing — a representation of the constituent structure of a string, as a word or sentence, comparable to a tree diagram, in which each constituent is shown in brackets and given a subscript grammatical label, with each bracketed item corresponding to a node in a tree diagram.
- labrador retriever — one of a breed of retrievers having a short, thick, oily, solid black or yellow coat, raised originally in Newfoundland.
- lambda abstraction — A term in lambda-calculus denoting a function. A lambda abstraction begins with a lower-case lambda (represented as "\" in this document), followed by a variable name (the "bound variable"), a full stop and a lambda expression (the body). The body is taken to extend as far to the right as possible so, for example an expression, \ x . \ y . x+y is read as \ x . (\ y . x+y). A nested abstraction such as this is often abbreviated to: \ x y . x + y The lambda expression (\ v . E) denotes a function which takes an argument and returns the term E with all free occurrences of v replaced by the actual argument. Application is represented by juxtaposition so (\ x . x) 42 represents the identity function applied to the constant 42. A lambda abstraction in Lisp is written as the symbol lambda, a list of zero or more variable names and a list of zero or more terms, e.g. (lambda (x y) (plus x y)) Lambda expressions in Haskell are written as a backslash, "\", one or more patterns (e.g. variable names), "->" and an expression, e.g. \ x -> x.
- lawrence of arabia — D(avid) H(erbert) 1885–1930, English novelist.
- legislative branch — the branch of government having the power to make laws; the legislature.
- lincoln's birthday — February 12, a legal holiday in some states of the U.S., in honor of the birth of Abraham Lincoln.
- linear combination — a sum of products of each quantity times a constant: The expression aX + bY + cZ is a linear combination of X, Y, and Z, where a, b, and c are constants.
- little st. bernard — Great, a mountain pass between SW Switzerland and NW Italy, in the Pennine Alps: Napoleon led his army through it in 1800; location of a hospice. 8108 feet (2470 meters) high.
- macroinvertebrates — Plural form of macroinvertebrate.
- madeira embroidery — broderie anglaise.
- make a beeline for — head directly towards
- mandelbrot, benoit — Benoit Mandelbrot
- manufacturing base — the manufacturing industries of an area or a country considered as a unit and a constituent part of the economy
- medicine bow range — a range of the Rocky Mountains, in Wyoming and Colorado. Highest peak, Medicine Bow Peak, 12,014 feet (3662 meters).
- metabolic syndrome — Pathology. a group of medical conditions present simultaneously in a patient, as high blood pressure, low HDL cholesterol levels, and an excess of abdominal fat, that increases a person's risk of heart disease, stroke, and diabetes. Also called insulin resistance syndrome.
- microinvertebrates — Plural form of microinvertebrate.
- mordovian republic — a constituent republic of W central Russia, in the middle Volga basin. Capital: Saransk. Pop: 888 700 (2002). Area: 26 200 sq km (10 110 sq miles)
- mountain cranberry — cowberry
- moving bed reactor — A moving bed reactor is a reactor in which a layer of catalyst in the form of granules is moved between a reaction area and a regeneration area.
- natural childbirth — childbirth involving little or no use of drugs or anesthesia and usually involving a program in which the mother is psychologically and physically prepared for the birth process.
- nebular hypothesis — the theory that the solar system evolved from a mass of nebular matter: prominent in the 19th century following its precise formulation by Laplace.
- neighborhood watch — a neighborhood surveillance program or group in which residents keep watch over one another's houses, patrol the streets, etc., in an attempt to prevent crime.
- new american bible — an English translation of the Bible based on the original languages, prepared by Catholic Biblical scholars, and first published in 1970.
- nobiliary particle — a preposition forming part of a title of nobility or surname, as French de or German von.
- nonachlorobiphenyl — (organic compound) Either of three isomers of the polychlorinated biphenyl containing nine chlorine atoms.
- noninterchangeable — That cannot be interchanged with another.
- nuclear capability — If a country has nuclear capability, it is able to produce nuclear power and usually nuclear weapons.
- obedience training — the training of an animal, especially a dog, to obey certain commands.
- object-orientation — object-oriented
- octachlorobiphenyl — (organic compound) Either of twelve isomers of the polychlorinated biphenyl containing eight chlorine atoms.
- optical brightener — an additive that dyes and brightens fabric or paper
- oriental alabaster — alabaster (def 2).
- passive vocabulary — all the words, collectively, that a person can understand
- pattern bargaining — a collective bargaining technique in which contract terms in one settlement are used as models to be imposed on other negotiating parties within an industry.
- pileolated warbler — either of two western subspecies of Wilson's warbler.
- play silly buggers — to fool around and waste time
- point-bearing pile — a pile depending on the soil or rock beneath its foot for support.
- portable equipment — Portable equipment is electrical equipment that can easily be moved from one place to another while in operation or while connected to the supply.