13-letter words containing f, r, o, l, i, c
- on reflection — second thoughts
- 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.
- orchid family — the plant family Orchidaceae, characterized by terrestrial or epiphytic herbaceous plants having simple, parallel-veined, usually alternate leaves, complex and often large and showy flowers pollinated primarily by insects, and fruit in the form of a capsule containing numerous minute seeds, and including calypso, fringed orchis, lady's-slipper, pogonia, rattlesnake plantain, vanilla, as well as numerous tropical orchids such as those of the genera Cattleya, Cymbidium, Dendrobium, Phalaenopsis, and Vanda.
- patrifocality — the system or fact of being patrifocal
- penicilliform — in the shape of a pencil or paintbrush
- perfunctorily — performed merely as a routine duty; hasty and superficial: perfunctory courtesy.
- pickerel frog — a meadow frog, Rana palustris, common in eastern North America, similar to the leopard frog but with squarish dark spots on the back.
- pilot officer — A pilot officer is an officer of low rank in the British Royal Air Force.
- prefunctional — of or relating to a function or functions: functional difficulties in the administration.
- prolification — the production of offspring
- qualificatory — That serves as qualification.
- reflex-action — Physiology. noting or pertaining to an involuntary response to a stimulus, the nerve impulse from a receptor being transmitted inward to a nerve center that in turn transmits it outward to an effector.
- refocillation — the restoring of strength by refreshment or revivement
- reinforceable — capable of being reinforced
- retroflection — a bending backward.
- rock-fill dam — a dam built mainly of rocks of various sizes fitted compactly together.
- role conflict — emotional conflict arising when competing demands are made on an individual in the fulfillment of his or her multiple social roles.
- scalariformly — in a scalariform or ladder-like manner
- scalpelliform — having the shape of a scalpel blade
- school figure — (in ice skating) any one of a group of sixty-nine different figures, skated in two- or three-circle figure-eight patterns, used to test various skating movements, a skater usually being required to perform six selected ones in competition.
- school friend — A school friend is a friend of yours who is at the same school as you, or who used to be at the same school when you were children.
- self-creation — the act of producing or causing to exist; the act of creating; engendering.
- simplificator — a person who simplifies matters
- spadicifloral — having flowers borne on a spadix
- special offer — bargain
- telescopiform — having body parts which resemble a telescope in that the retract within one another
- trifunctional — pertaining to molecules that can react at three sites.
- tropical fish — any of numerous small, usually brightly colored fishes, indigenous to the tropics, and often kept and bred in home aquariums.
- umbraculiform — umbrella-shaped