12-letter words containing n, o, b, a, r
- powerboating — a boat propelled by mechanical power.
- probationary — the act of testing.
- proboscidean — pertaining to or resembling a proboscis.
- procarbazine — a drug used in the treatment of cancer, esp lymphomas
- protuberance — the condition, state, or quality of being protuberant.
- protuberancy — protuberance.
- provableness — the quality of being provable
- rabbet joint — a joint between rabbeted parts.
- radar beacon — a radar device at a fixed location that, on receiving a radar signal, automatically transmits a particular radar signal in reply, identifying itself and enabling navigators of ships and aircraft to determine their distance and direction from it.
- radio beacon — a radio station that sends a characteristic signal so as to enable ships or airplanes to determine their position or bearing by means of a radio compass.
- radio-carbon — Also called carbon 14. a radioactive isotope of carbon with mass number 14 and a half-life of about 5730 years: widely used in the dating of organic materials.
- ragged robin — a plant, Lychnis flos-cuculi, of the pink family, having pink or white flowers with dissected petals.
- rainbow bird — an Australian bee-eater, Merops ornatus, with brightly coloured plumage. It feeds in flight and nests in sandy burrows
- rainbow fish — guppy.
- rainbow flag — a multicoloured flag used as a symbol of peace; often used to represent gay and lesbian pride
- rainbow roof — a gable roof in the form of a broad Gothic arch, with gently sloping convex surfaces.
- rambunctious — difficult to control or handle; wildly boisterous: a rambunctious child.
- reabsorption — resorption (def 2).
- reading book — a book for people who are learning to read, to help them become accustomed to looking at and understanding written words
- recognizable — to identify as something or someone previously seen, known, etc.: He had changed so much that one could scarcely recognize him.
- reconcilable — capable of being reconciled.
- renegotiable — to negotiate again, as a loan, treaty, etc.
- renounceable — of a nature that can be renounced
- ribbon cable — (hardware) A type of flat multicore cable with cores positioned side-by-side, making it quick and relatively easy to clamp an Insulation Displacement Connector (IDC) across all cores. Ribbon cables typically have grey insulation with cores on a 0.050" pitch and a red stripe marking Pin 1. They are less resilient than screened, multicore cable and are usually used inside equipment where little movement or plugging and unplugging are expected. A common use is connecting a disk drive to the motherboard in a PC.
- ribbon plant — spider plant (def 1).
- ribbon snake — either of two long-tailed garter snakes, Thamnophis proximus or T. sauritus, of eastern and central North America, having a brownish body and yellow or orange stripes.
- ribonuclease — any of the class of enzymes that catalyze the hydrolysis of RNA.
- robber baron — History/Historical. a noble who robbed travelers passing through his lands.
- robotization — the introduction of robots to carry out industrial tasks
- round barrow — a funerary barrow having a bell, disk, saucer, or pond shape, primarily of the Bronze Age and containing the cremated remains of corpses along with grave artifacts.
- roundaboutly — in a roundabout manner
- sailboarding — windsurfing.
- salmon brick — a soft, imperfectly fired brick having a reddish-orange color.
- samurai bond — a bond issued in Japan and denominated in yen, available for purchase by nonresidents of Japan
- san bernardo — a city in central Chile, S of Santiago.
- sandbox tree — a tropical American tree, Hura crepitans, of the spurge family, bearing a furrowed, roundish fruit about the size of an orange that when ripe and dry bursts with a sharp report and scatters the seeds.
- scrapbooking — hobby: collaging
- serial bonds — Serial bonds are bonds that are issued at the same time but have staggered maturity dates.
- shopbreaking — the act of breaking into a shop
- sigma baryon — an unstable hyperon having positive, negative, or zero electric charge and strangeness −1. Symbol: Σ.
- signal board — a board for displaying electrically transmitted signals and indicating their source.
- snobographer — a person who writes about snobs
- snowboarding — a board for gliding on snow, resembling a wide ski, to which both feet are secured and that one rides in an upright position.
- sorbefacient — inducing absorption
- spiral-bound — having a spiral binding.
- stonebreaker — a person that breaks up stone
- strobilation — asexual reproduction by division into segments, as in tapeworms and jellyfishes
- sub-attorney — a lawyer; attorney-at-law.
- subarachnoid — of, relating to, or situated below the arachnoid membrane.
- subarcuation — a structure that is somewhat arched