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13-letter words containing a, b, o, r, t, i

  • mountainboard — a type of skateboard specially designed for rough terrain and steep slopes, having four large wheels linked by a suspension system
  • multivibrator — A device consisting of two amplifying transistors or valves, each with its output connected to the input of the other, producing an oscillatory signal.
  • mycobacterial — (medicine) Of or pertaining to mycobacteria.
  • mycobacterium — A bacterium of a group that includes the causative agents of leprosy and tuberculosis.
  • myofibroblast — (cytology) A cell that is intermediate between a fibroblast and smooth muscle.
  • neoliberalist — A supporter of neoliberalism.
  • nitrobacteria — Plural form of nitrobacterium.
  • nitrogen base — Chemistry, Biochemistry. a nitrogen-containing organic compound that has the chemical properties of a base, especially a pyrimidine or purine: Four nitrogen bases are present in a DNA molecule.
  • nonabsorptive — Not absorptive.
  • nonaerobiotic — Able to live without oxygen from the atmosphere.
  • nondeliberate — not deliberate or intentional
  • nonfilterable — incapable of being filtered
  • nonobligatory — Not obligatory; not required; optional.
  • nonprofitable — Not profitable; not making profit.
  • notary public — a public officer or other person authorized to authenticate contracts, acknowledge deeds, take affidavits, protest bills of exchange, take depositions, etc.
  • objurgatively — In an objurgative or reproving manner.
  • 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.
  • opisthobranch — any gastropod mollusk of the order Opisthobranchia, as the sea slugs, sea butterflies, and sea hares, characterized by a vestigial or absent mantle and shell and two pairs of tentacles.
  • 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.
  • orbitofrontal — Located in the frontal lobes above the orbits of the eyes.
  • ornithophobia — Fear of birds.
  • overambitious — having ambition; eagerly desirous of achieving or obtaining success, power, wealth, a specific goal, etc.: ambitious students.
  • 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
  • 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 orbit — a temporary orbit in which a spacecraft awaits the next phase of its mission.
  • parrot's-bill — a showy, vinelike plant, Clianthus puniceus, of New Zealand, having clusters of eight white-streaked, crimson flowers.
  • 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.
  • 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.
  • perditionable — deserving perdition or damnation
  • 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.
  • pigeon breast — chicken breast.
  • post-cambrian — Geology. noting or pertaining to a period of the Paleozoic Era, occurring from 570 million to 500 million years ago, when algae and marine invertebrates were the predominant form of life.
  • prebasic molt — the molt by which most birds replace all of their feathers, usually occurring annually after the breeding season.
  • prefabricator — someone who or an organization that prefabricates
  • pro-abolition — the act of abolishing: the abolition of war.
  • probabilistic — Statistics. of or relating to probability: probabilistic forecasting.
  • problematical — of the nature of a problem; doubtful; uncertain; questionable.
  • profitability — yielding profit; remunerative: a profitable deal.
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