13-letter words containing f, r, e, o, b
- 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.
- osteofibrosis — loss of calcium from the bones, causing them to become fragile
- out of breath — the air inhaled and exhaled in respiration.
- owl butterfly — any of several South American nymphalid butterflies of the genus Caligo, especially C. eurylochus, having a spot like an owl's eye on each hind wing.
- prefabricator — someone who or an organization that prefabricates
- reformability — the extent to which something or someone is reformable; the capability or susceptibility to reform
- reinforceable — capable of being reinforced
- 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.
- robert fulton — Robert, 1765–1815, U.S. engineer and inventor: builder of the first profitable steamboat.
- round of beef — round1 (def 35a).
- rule of thumb — a general or approximate principle, procedure, or rule based on experience or practice, as opposed to a specific, scientific calculation or estimate.
- self-absorbed — preoccupied with one's thoughts, interests, etc.
- self-observed — to see, watch, perceive, or notice: He observed the passersby in the street.
- the better of — having recovered from
- thereinbefore — before that
- to bear fruit — If the effort that you put into something or a particular way of doing something bears fruit, it is successful and produces good results.
- transformable — to change in form, appearance, or structure; metamorphose.
- umbelliferous — bearing an umbel or umbels.
- unciform bone — a small bone of the wrist
- uncomfortable — causing discomfort or distress; painful; irritating.
- unconformable — not conformable; not conforming.
- unenforceable — to put or keep in force; compel obedience to: to enforce a rule; Traffic laws will be strictly enforced.
- unforeseeable — to have prescience of; to know in advance; foreknow.
- unforeseeably — to have prescience of; to know in advance; foreknow.
- unforgettable — impossible to forget; indelibly impressed on the memory: scenes of unforgettable beauty.
- unforgettably — impossible to forget; indelibly impressed on the memory: scenes of unforgettable beauty.
- unperformable — to carry out; execute; do: to perform miracles.
- water buffalo — a buffalo, Bubalus bubalis, of the Old World tropics, having large, flattened, curved horns: wild populations are near extinction.