13-letter words containing b, l, o, t, i
- optical bench — an apparatus, as a special table or rigid beam, for the precise positioning of light sources, screens, and optical instruments used for optical and photometric studies, having a ruled bar to which these devices can be attached and along which they can be readily adjusted.
- 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.
- ostensibility — The quality of being ostensible.
- out on a limb — a part or member of an animal body distinct from the head and trunk, as a leg, arm, or wing: the lower limbs; artificial limbs.
- overexcitable — Excessively excitable.
- 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.
- 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.
- photo-biology — the study of the effects of light on biological systems.
- photocopiable — able or legally permitted to be photocopied
- pilot balloon — a balloon for the visual observation of upper-atmosphere wind currents.
- pilot biscuit — hardtack.
- play hob with — to make trouble for; interfere with and make disordered
- plebification — the act of making popular or vulgar
- polling booth — a booth in which voters cast their votes.
- polybutadiene — a rubberlike polymer of butadiene blended with other synthetics to replace natural rubber in tires.
- possibilities — the state or fact of being possible: the possibility of error.
- potato blight — fungal disease affecting potatoes
- prebasic molt — the molt by which most birds replace all of their feathers, usually occurring annually after the breeding season.
- pro-abolition — the act of abolishing: the abolition of war.
- pro-celebrity — (of a golf tournament, snooker tournament, etc) involving both professional players and celebrities
- probabilistic — Statistics. of or relating to probability: probabilistic forecasting.
- problematical — of the nature of a problem; doubtful; uncertain; questionable.
- producibility — to bring into existence; give rise to; cause: to produce steam.
- profitability — yielding profit; remunerative: a profitable deal.
- prohibitively — serving or tending to prohibit or forbid something.
- promotability — to help or encourage to exist or flourish; further: to promote world peace.
- proverbialist — a person who composes, records or uses proverbial expressions
- public sector — the area of the nation's affairs under governmental rather than private control.
- purpose-built — A purpose-built building has been specially designed and built for a particular use.
- quodlibetical — a subtle or elaborate argument or point of debate, usually on a theological or scholastic subject.
- reasonability — agreeable to reason or sound judgment; logical: a reasonable choice for chairman.
- recalibration — the act or process of recalibrating something
- redial button — a button on a telephone, allowing the user to dial a number again
- reformability — the extent to which something or someone is reformable; the capability or susceptibility to reform
- rehabilitator — to restore to a condition of good health, ability to work, or the like.
- relubrication — to apply some oily or greasy substance to (a machine, parts of a mechanism, etc.) in order to diminish friction; oil or grease (something).
- republication — publication anew.
- resublimation — Psychology. the diversion of the energy of a sexual or other biological impulse from its immediate goal to one of a more acceptable social, moral, or aesthetic nature or use.
- retrofittable — to modify equipment (in airplanes, automobiles, a factory, etc.) that is already in service using parts developed or made available after the time of original manufacture.