13-letter words containing o, m, b
- fume cupboard — vent used in a laboratory
- funambulation — the act of walking on a tightrope; funambulism
- funambulatory — relating to tightrope-walking
- gobar numeral — any of a set of ancient numerals derived from Hindu numerals
- golden number — a number between 1 and 19, used to indicate the position of any year in the Metonic cycle, calculated as the remainder when 1 is added to the given year and the sum is divided by 19. If the remainder is zero the number is 19
- gombeen (man) — a shopkeeper who engages in usury on the side
- googlebombing — an effort to move a website to the top of search-engine results for a particular word or phrase, by creating a large number of links that contain this search text.
- graffiti-bomb — Military. a projectile, formerly usually spherical, filled with a bursting charge and exploded by means of a fuze, by impact, or otherwise, now generally designed to be dropped from an aircraft.
- guzman blanco — Antonio [ahn-taw-nyaw] /ɑnˈtɔ nyɔ/ (Show IPA), 1829–99, Venezuelan political leader: president 1870–88.
- habit of mind — If someone has a particular habit of mind, they usually think in that particular way.
- habit-forming — tending to cause or encourage addiction, especially through physiological dependence: habit-forming drugs.
- hail columbia — hell (used as a euphemism): He caught Hail Columbia for coming home late.
- halobacterium — Any of various extremophiles, of genus Halobacterium, found in water saturated or nearly saturated with salt.
- harbor master — an official who supervises operations in a harbor area and administers its rules.
- harbourmaster — (British, Canada, nautical) An official responsible for the enforcement of regulations in a port.
- heart problem — a defect or disease of the heart
- hemimetabolic — (zoology) Having an incomplete metamorphosis, the larvae differing from the adults chiefly in lacking wings.
- hemocytoblast — a primordial cell capable of developing into any type of blood cell.
- hermosa beach — a city in SW California, near Los Angeles.
- holometabolic — Of, pertaining to, or undergoing holometabolism.
- home assembly — assembly at home of something supplied in pieces
- homeobox gene — any of a group of genes whose function is to divide the early embryo into bands of cells with the potential to become specific organs or tissues.
- homework club — an after-school club where students can stay to do their homework
- hoodman-blind — blindman's buff.
- hothouse lamb — a lamb born in the fall or early winter, usually reared indoors, specially fed, and marketed when from 9 to 16 weeks of age.
- humboldt peak — a mountain in S Colorado, in the Sangre de Cristo range. 14,064 feet (4290 meters).
- hummle bonnet — a cap formerly worn by Scottish soldiers
- hydrogen bomb — a bomb, more powerful than an atomic bomb, that derives its explosive energy from the thermonuclear fusion reaction of hydrogen isotopes.
- hypermobility — An excess amount of elasticity in a bodily joint.
- hypometabolic — Relating to hypometabolism.
- immovableness — The quality of being immovable.
- immunobiology — the study of the immune response and the biological aspects of immunity to disease.
- immunosorbent — an insoluble surface to which a specific antibody is attached for the purpose of removing the corresponding antigen from a solution or suspension.
- imponderables — Plural form of imponderable.
- impossibilism — a belief that everything is impossible; defeatism
- impossibilist — a person who holds to the ideas of impossibilism
- impossibility — condition or quality of being impossible.
- improbability — the quality or condition of being improbable; unlikelihood.
- improvability — to bring into a more desirable or excellent condition: He took vitamins to improve his health.
- inboard motor — a boat's motor that is situated within the hull
- incombustible — not combustible; incapable of being burned; fireproof.
- incommiscible — not able to be mixed or combined
- incompatibles — not compatible; unable to exist together in harmony: She asked for a divorce because they were utterly incompatible.
- incompossible — incompatible; mutually exclusive
- inconformable — Obsolete form of unconformable.
- isobarometric — isobaric
- isobathytherm — a line on a chart or diagram of a body of water, connecting depths having the same temperature.
- isothermobath — a line drawn on a diagram of a vertical section of the ocean connecting all points having equal temperature.
- judgment book — the book from which all persons will be judged at the Last Judgment, containing a full record of their acts.
- kalambo falls — an archaeological site at the southeastern end of Lake Tanganyika, on the Zambia-Tanzania border, that has yielded one of the longest continuous cultural sequences in sub-Saharan Africa, beginning more than 100,000 years b.p. and characterized in the earliest levels by evidence of fire use and some simple wooden implements of Lower Paleolithic, or Acheulean, humans.