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13-letter words containing r, e, b, a, i

  • observability — capable of being or liable to be observed; noticeable; visible; discernible: an observable change in attitude.
  • observational — of, relating to, or founded on observation, especially founded on observation rather than experiment.
  • observatories — Plural form of observatory.
  • obstetrically — (medicine) In terms of obstetrics.
  • obstetricians — Plural form of obstetrician.
  • office bearer — a person who holds an office, as in a society, company, club, etc; official
  • optical fiber — optical fibre
  • optical fibre — (communications)   (fibre optics, FO, US "fiber", light pipe) A plastic or glass (silicon dioxide) fibre no thicker than a human hair used to transmit information using infra-red or even visible light as the carrier (usually a laser). The light beam is an electromagnetic signal with a frequency in the range of 10^14 to 10^15 Hertz. Optical fibre is less susceptible to external noise than other transmission media, and is cheaper to make than copper wire, but it is much more difficult to connect. Optical fibres are difficult to tamper with (to monitor or inject data in the middle of a connection), making them appropriate for secure communications. The light beams do not escape from the medium because the material used provides total internal reflection. See also FDDI, Optical Carrier n, SONET.
  • orbital index — the ratio of the maximum breadth to the maximum height of the orbital cavity multiplied by 100.
  • organ-builder — a maker of organs
  • overambitious — having ambition; eagerly desirous of achieving or obtaining success, power, wealth, a specific goal, etc.: ambitious students.
  • overbalancing — Present participle of overbalance.
  • overbearingly — domineering; dictatorial; haughtily or rudely arrogant.
  • overbreathing — hyperventilation
  • overexcitable — Excessively excitable.
  • overnight bag — a travel bag large enough to hold personal articles and clothing for an overnight trip.
  • overstability — the state of being excessively stable
  • paleosiberian — a group of languages comprising those languages of Siberia that are not affiliated with Indo-European, Altaic, Uralic, or Eskimo-Aleut and including the Chukotian family and the unrelated language isolates Ket, Nivkh, and Yukaghir; Paleo-Asiatic.
  • pareira brava — pareira.
  • parietal bone — either of a pair of membrane bones forming, by their union at the sagittal suture, part of the sides and top of the skull.
  • parietal lobe — the middle part of each cerebral hemisphere behind the central sulcus.
  • parking brake — emergency brake.
  • particle beam — Physics. a concentrated stream of particles, as electrons, neutrons, or protons, generated for studying particle interactions, nuclear structure, crystal structure, etc.
  • particleboard — a boardlike building material made by compressing sawdust or wood particles with a resin binder
  • partitionable — a division into or distribution in portions or shares.
  • path-breaking — very original; ground-breaking
  • paucis verbis — in or by few words; with brevity.
  • pentobarbital — a barbiturate, C 1 1 H 1 7 N 2 O 3 , used as a hypnotic and as a sedative.
  • perambulation — to walk through, about, or over; travel through; traverse.
  • perboric acid — a hypothetical acid, HBO 3 , known only in the form of its salts.
  • perditionable — deserving perdition or damnation
  • perennibranch — any amphibian that retains its gills throughout its life
  • perishability — subject to decay, ruin, or destruction: perishable fruits and vegetables.
  • peruvian bark — cinchona (def 2).
  • phenobarbital — a white, crystalline powder, C 1 2 H 1 2 N 2 O 3 , used as a sedative, a hypnotic, and as an antispasmodic in epilepsy.
  • phlebographic — relating to phlebography or the X-ray imaging of a vein that has been injected with a dye that is visible on the image taken
  • pigeon breast — chicken breast.
  • pine grosbeak — a large grosbeak, Pinicola enucleator, of coniferous forests of northern North America and Eurasia, the male of which has rose and gray plumage.
  • plain bearing — any of various bearings, not containing rolling elements, that present to the shaft or axle they support broad areas of corresponding form, usually segments of a cylinder.
  • pre-columbian — of or relating to the Americas before the arrival of Columbus: pre-Columbian art; pre-Columbian Indians.
  • pre-establish — to establish, set up, set out, arrange or make secure in advance or previously
  • prebasic molt — the molt by which most birds replace all of their feathers, usually occurring annually after the breeding season.
  • prebiological — of or relating to chemicals or environmental conditions existing before the development of the first living things.
  • prefabricated — to fabricate or construct beforehand.
  • prefabricator — someone who or an organization that prefabricates
  • preferability — more desirable.
  • premandibular — situated in front of the mandible
  • price bracket — a notional range of prices which consumers are prepared to pay for a good
  • prince albert — Carl (Bert) 1908–2000, U.S. politician: Speaker of the House 1971–77.
  • private brand — a product marketed under a private label.
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