16-letter words containing r, a, b, o
- hold a brief for — to argue for; champion
- horseback riding — activity: riding a horse
- horsehead nebula — a dark nebula in the constellation Orion, composed of opaque cosmic dust and resembling the head of a horse.
- hot and bothered — having or giving off heat; having a high temperature: a hot fire; hot coffee.
- hot-water bottle — a bag, usually of rubber, for holding hot water to apply warmth to some part of the body, as the feet.
- hyaloid membrane — the delicate, pellucid, and nearly structureless membrane enclosing the vitreous humor of the eye.
- hydration number — the number of molecules of water with which an ion can combine in an aqueous solution of given concentration.
- hydrobromic acid — a colorless or faintly yellow corrosive liquid, HBr, an aqueous solution of hydrogen bromide.
- in a brown study — in a reverie or daydream
- inboard-outboard — Also, outdrive, stern-drive. (of a motorboat) having an inboard engine connected to a maneuverable outboard drive-shaft unit.
- incommensurables — Plural form of incommensurable.
- incontravertable — Misspelling of incontrovertible.
- incorporated bar — (in some states) a system of bar associations to which all lawyers are required to belong.
- indian breadroot — breadroot.
- insurance broker — person who sells insurance policies
- intake of breath — When someone takes an intake of breath, they breathe in quickly and noisily, usually because they are shocked at something.
- inter-laboratory — a building, part of a building, or other place equipped to conduct scientific experiments, tests, investigations, etc., or to manufacture chemicals, medicines, or the like.
- interbehavioural — relating to or involving interbehaviour
- intercalibration — to determine, check, or rectify the graduation of (any instrument giving quantitative measurements).
- interoperability — capable of being used or operated reciprocally: interoperable weapons systems.
- into the bargain — an advantageous purchase, especially one acquired at less than the usual cost: The sale offered bargains galore.
- irresolvableness — The state or quality of being irresolvable.
- jacobson's organ — either of a pair of blind, tubular, olfactory sacs in the roof of the mouth, vestigial in humans but well-developed in many animals, especially reptiles.
- journeyman baker — a baker who is qualified to work in the employment of another
- karadeniz bogazi — Bosporus
- knapsack problem — the problem of determining which numbers from a given collection of numbers have been added together to yield a specific sum: used in cryptography to encipher (and sometimes decipher) messages.
- knights of labor — a secret workingmen's organization formed in 1869 to defend the interests of labor.
- labour agreement — a contract between workers and managers setting out working conditions, wages, etc
- labour relations — Labour relations refers to the relationship between employers and employees in industry, and the political decisions and laws that affect it.
- labour-intensive — Labour-intensive industries or methods of making things involve a lot of workers. Compare capital-intensive.
- labrador current — a cold ocean current flowing southwards off the coast of Labrador and meeting the warm Gulf Stream, causing dense fogs off the coast of Newfoundland
- large-print book — a book where the text is printed in larger text than normal, so as to make it easier to read, esp for the visually impaired
- leveraged buyout — the purchase of a company with borrowed money, using the company's assets as collateral, and often discharging the debt and realizing a profit by liquidating the company. Abbreviation: LBO.
- libation-bearers — Choëphori.
- liberal democrat — In Britain, a Liberal Democrat is a member of the Liberal Democrat Party.
- liberal unionist — a Liberal who opposed Gladstone's policy of Irish Home Rule in 1886 and after
- lick observatory — the astronomical observatory of the University of California, situated on Mount Hamilton, near San Jose, California, and having a 120-inch (3-meter) reflecting telescope and a 36-inch (91-cm) refracting telescope.
- little brown bat — any of several small to medium-sized common bats of the genera Myotis and Eptesicus, found worldwide in caves, trees, and buildings, including M. lucifugus (little brown bat) and E. fuscus (big brown bat) a widespread North American species.
- lord chamberlain — (in Britain) the chief official of the royal household
- low-carbon steel — steel containing between 0.04 and 0.25 per cent carbon
- magnolia warbler — a black and yellow wood warbler, Dendroica magnolia, of North America.
- make a break for — run towards
- man booker prize — an annual prize for a work of Commonwealth or Irish fiction of £50,000, awarded as the Booker Prize from 1969–2002
- man on horseback — a military leader who presents himself as the savior of the country during a period of crisis and either assumes or threatens to assume dictatorial powers.
- manganese bronze — an alloy that is about 55 percent copper, 40 percent zinc, and up to 3.5 percent manganese.
- marine barometer — a barometer for use on shipboard, especially one mounted on gimbals so as to minimize the effects of the motion of the vessel.
- marine biologist — scientist who studies sea life
- mass observation — the study of the social habits of people through observation, interviews, etc
- medal of bravery — a Canadian award for courage
- megakaryoblastic — (cytology) Of or pertaining to a megakaryoblast.