12-letter words containing r, a, b, i, n, o
- obscurantist — opposition to the increase and spread of knowledge.
- obscurations — Plural form of obscuration.
- observations — Plural form of observation.
- obstetrician — a physician who specializes in obstetrics. Abbreviation: OB, ob.
- olive branch — a branch of the olive tree as an emblem of peace.
- on probation — under the supervision of a probation officer
- on shipboard — on board a ship
- on the brain — constantly in mind
- orion nebula — a luminous nebula in the constellation Orion, in the center of Orion's sword.
- osco-umbrian — a group of languages, usually classified as Italic, that contains Oscan and Umbrian.
- overtime ban — a refusal by employees to work overtime
- perturbation — the act of perturbing.
- petrobrusian — a member of a 12th-century sect in S France that rejected the Mass, infant baptism, prayers for the dead, sacerdotalism, the veneration of the cross, and the building of churches.
- port alberni — a port in SW British Columbia, in SW Canada, on the E central part of Vancouver Island, on an inlet of the Pacific Ocean.
- postabortion — Also called voluntary abortion. the removal of an embryo or fetus from the uterus in order to end a pregnancy.
- 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
- rabbet joint — a joint between rabbeted parts.
- 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.
- 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.
- robotization — the introduction of robots to carry out industrial tasks
- 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
- 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.
- 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.
- strobilation — asexual reproduction by division into segments, as in tapeworms and jellyfishes