19-letter words containing r, a, b
- goodwill ambassador — an ambassador who shows goodwill to another country, organization, etc, on behalf of his or her own country, organization, etc
- grasshopper warbler — a Eurasian warbler Locustella naevia
- great crested grebe — a large Old World grebe, Podiceps cristatus, having black, earlike tufts of feathers projecting backward from the top of the head.
- green mountain boys — the members of the armed bands of Vermont organized in 1770 to oppose New York's territorial claims. Under Ethan Allen they won fame in the War of American Independence
- hamiltonian problem — (computability) (Or "Hamilton's problem") A problem in graph theory posed by William Hamilton: given a graph, is there a path through the graph which visits each vertex precisely once (a "Hamiltonian path")? Is there a Hamiltonian path which ends up where it started (a "Hamiltonian cycle" or "Hamiltonian tour")? Hamilton's problem is NP-complete. It has numerous applications, sometimes completely unexpected, in computing.
- handlebar moustache — a man's moustache having long, curved ends that resemble the handlebars of a bicycle.
- harbinger-of-spring — a North American umbelliferous herb, Erigenia bulbosa, having white flowers that bloom early in the spring.
- have a problem with — to be unable to understand or do
- heptachlorobiphenyl — (organic compound) Either of twenty-four isomers of the polychlorinated biphenyl containing seven chlorine atoms.
- high-bush cranberry — cranberry bush
- hildegard of bingen — Hildegard von (Hildegard of Bingen"Sibyl of the Rhine") 1098–1178, German nun, healer, writer, and composer.
- honorable discharge — a discharge from military service of a person who has fulfilled obligations efficiently, honorably, and faithfully.
- horizontal mobility — movement from one position to another within the same social level, as changing jobs without altering occupational status, or moving between social groups having the same social status.
- human rights abuses — acts that contravene human rights
- hydrostatic balance — a balance for finding the weight of an object submerged in water in order to determine the upthrust on it and thus determine its relative density
- hydroxybenzoic acid — Hydroxybenzoic acid is the active ingredient in a number of drugs, for example, aspirin. Hydroxybenzoic acid is also used as a preservative.
- hydroxybutyric acid — ketone body.
- hydroxydaunorubicin — Doxorubicin.
- hyperbolic cosecant — a hyperbolic function that is the reciprocal of hyperbolic sine
- in the catbird seat — If you say that someone is in the catbird seat, you think that their situation is very good.
- incommensurableness — (rare) Incommensurability.
- incomplete abortion — a miscarriage in which some fetal or placental tissue remains in the uterus.
- industrial tribunal — (in Northern Ireland and formerly elsewhere in the UK) a tribunal that rules on disputes between employers and employees regarding unfair dismissal, redundancy, etc
- information algebra — Theoretical formalism for DP, never resulted in a language. Language Structure Group of CODASYL, ca. 1962. Sammet 1969, 709.
- installed user base — user base
- intangible property — intellectual property, rights ownership
- interchangeableness — Quality of being interchangeable.
- internal-combustion — of or relating to an internal-combustion engine.
- intervertebral disc — any of the cartilaginous discs between individual vertebrae, acting as shock absorbers
- intervertebral disk — the plate of fibrocartilage between the bodies of adjacent vertebrae.
- ipratropium bromide — an anticholinergic bronchodilator, C 20 H 30 BrNO 3 , used in the treatment of chronic bronchitis and in airway obstruction diseases.
- isobutyl propionate — a colorless liquid, C 7 H 14 O 2 , used chiefly as a paint, varnish, and lacquer solvent.
- japanese arborvitae — a Japanese evergreen tree, Thuja standishii, having spreading branches with bright-green leaves.
- job creation scheme — a governmental scheme to increase the number of jobs in an area, organization, etc
- jumping bristletail — any of several thysanuran insects that live in dark, warm, moist places, as under leaves, bark, and dead tree trunks and along rocky seacoasts, and are active jumpers, making erratic leaps when disturbed.
- junior bantamweight — a boxer weighing up to 115 pounds (51.7 kg), between flyweight and bantamweight.
- kansas-nebraska act — the act of Congress in 1854 annulling the Missouri Compromise, providing for the organization of the territories of Kansas and Nebraska, and permitting these territories self-determination on the question of slavery.
- kellogg-briand pact — a treaty renouncing war as an instrument of national policy and urging peaceful means for the settlement of international disputes, originally signed in 1928 by 15 nations, later joined by 49 others.
- keyboard instrument — any musical instrument that is played using a keyboard
- king's remembrancer — (in Great Britain) a judiciary official who collects debts owed to the king.
- know better than to — not to be so stupid as to
- lady baltimore cake — a white layer cake using only the beaten whites of eggs and spread with a fruitnut filling consisting of raisins, figs, walnuts or pecans, and sometimes candied cherries.
- language laboratory — a special room or rooms with sound-recording and -reproducing equipment for use by students to practice speaking foreign languages, usually with an instructor monitoring the program.
- lean over backwards — to make a special effort, esp in order to please
- learning disability — a disorder, as dyslexia, usually affecting school-age children of normal or above-normal intelligence, characterized by difficulty in understanding or using spoken or written language, and thought to be related to impairment or slowed development of perceptual motor skills.
- liability insurance — insurance covering the insured against losses arising from injury or damage to another person or property.
- liberation theology — a 20th-century Christian theology, emphasizing the Biblical and doctrinal theme of liberation from oppression, whether racial, sexual, economic, or political.
- library of congress — one of the major library collections in the world, located in Washington, D.C., and functioning in some ways as the national library of the U.S. although not officially designated as such: established by Congress in 1800 for service to its members, but now also serving government agencies, other libraries, and the public.
- load-bearing printf — (programming, humour) The kind of bug present in a program which works correctly when producing debug output but fails when the debugging is turned off. The expression combines load-bearing wall and printf as used in debugging by printf.
- lobster-tail helmet — a burgonet fitted with a long, articulated tail of lames for protecting the nape of the neck, worn by cavalry in the 17th century.