13-letter words containing a, f, r

myrtle family — the plant family Myrtaceae, characterized by mostly tropical trees and shrubs having aromatic, simple, usually opposite leaves, clusters of flowers, and fruit in the form of a berry or capsule, and including allspice, clove, eucalyptus, guava, and myrtles of the genus Myrtus.
nanofortnight — (jargon) (Adelaide University) 10^-9 fortnights or about 1.2 milliseconds. This unit was used largely by students doing undergraduate practicals. See microfortnight, attoparsec, and micro-.
narrow-fisted — tight-fisted.
naval officer — member of navy staff
nectariferous — producing nectar.
nefariousness — extremely wicked or villainous; iniquitous: a nefarious plot.
neurofeedback — The presentation of realtime feedback on brainwave activity, as measured by sensors on the scalp, sometimes offered as a means of therapy.
neurofibromas — Plural form of neurofibroma.
neurofilament — (anatomy) A neurofibril.
never-failing — that does not fail ever; unfailing
new braunfels — a city in S Texas, near San Antonio.
new fairfield — a town in SW Connecticut.
niagara falls — the falls of the Niagara River: in Canada, the Horseshoe Falls, 158 feet (48 meters) high; 2600 feet (792 meters) wide; in the U.S., American Falls, 167 feet (51 meters) high; 1000 feet (305 meters) wide.
nitrification — the act of nitrifying.
nitroparaffin — any of a class of compounds derived from the methane series in which a hydrogen atom is replaced by a nitro group.
no fewer than — You use no fewer than to emphasize that a number is surprisingly large.
non-favorable — characterized by approval or support; positive: a favorable report.
non-fiduciary — Law. a person to whom property or power is entrusted for the benefit of another.
non-frangible — easily broken; breakable: Most frangible toys are not suitable for young children.
nonartificial — Not artificial.
noncolourfast — (of a fabric) having a colour that tends to fade when washed or worn
nondefamatory — Not defamatory.
nondeferrable — Not deferrable.
nonfigurative — of the nature of or involving a figure of speech, especially a metaphor; metaphorical and not literal: The word “head” has several figurative senses, as in “She's the head of the company.”. Synonyms: metaphorical, not literal, symbolic.
nonfilterable — incapable of being filtered
nonfraudulent — Not fraudulent.
nonprofitable — Not profitable; not making profit.
nonrefillable — Not refillable; unable to be refilled.
nonrefundable — an amount refunded.
norman french — Also called Norman. the French dialect of the Normans or of Normandy.
north african — the northern part of Africa, especially the region north of the tropical rain forest and comprised of Morocco, Algeria, Tunisia, Libya, and that part of Egypt west of the Gulf of Suez.
not far wrong — Someone or something that is not far wrong, not far out, or not far off is almost correct or almost accurate.
nuclear force — strong interaction
of all others — above all others
of many parts — having many different abilities
of many words — talkative
off the rails — into or in a state of dysfunction or disorder
off the track — a structure consisting of a pair of parallel lines of rails with their crossties, on which a railroad train, trolley, or the like runs.
office bearer — a person who holds an office, as in a society, company, club, etc; official
old favourite — If you refer to something as an old favourite, you mean that it has been in existence for a long time and everyone knows it or likes it.
olfactometers — Plural form of olfactometer.
olfactometric — Of or pertaining to olfactometry.
on sufferance — passive permission resulting from lack of interference; tolerance, especially of something wrong or illegal (usually preceded by on or by).
one-room flat — a studio flat in which the bedroom, sitting-room and kitchen are all one-room
open fracture — compound fracture.
oprahfication — the perceived increase in people’s desire to discuss their emotions or personal problems, attributed to the influence of confessional television programmes
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.
orate fratres — the call to prayer, addressed by the celebrant of the Mass to the people just before the Secret.
orbitofrontal — Located in the frontal lobes above the orbits of the eyes.

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