9-letter words containing r, o, f, i
- factor in — one of the elements contributing to a particular result or situation: Poverty is only one of the factors in crime.
- factor ix — a blood constituent necessary for clotting, the absence of which is characterized by a hemophilialike condition.
- factorial — Mathematics. the product of a given positive integer multiplied by all lesser positive integers: The quantity four factorial (4!) = 4 ⋅ 3 ⋅ 2 ⋅ 1 = 24. Symbol: n!, where n is the given integer.
- factories — A building or group of buildings where goods are manufactured or assembled chiefly by machine.
- factoring — one of the elements contributing to a particular result or situation: Poverty is only one of the factors in crime.
- factorise — (mathematics): To create a list of factors.
- factorize — Mathematics. to resolve into factors.
- fair copy — a copy of a document made after final correction.
- fair do's — equal shares or treatment
- fair oaks — Also called Seven Pines. a locality in E Virginia, near Richmond: battle 1862.
- fairyhood — a fairy nature or state: the fairyhood of Puck.
- falciform — sickle-shaped; falcate.
- far point — the point farthest from the eye at which an object is clearly focused on the retina when accommodation of the eye is completely relaxed.
- far-point — the point farthest from the eye at which an object is clearly focused on the retina when accommodation of the eye is completely relaxed.
- farrowing — a litter of pigs.
- fashioner — a person who fashions, forms, or gives shape to anything.
- favorites — a person or thing regarded with special favor or preference: That song is an old favorite of mine.
- favouring — Present participle of favour.
- favourite — a person or thing regarded with special favor or preference: That song is an old favorite of mine.
- feracious — Producing in abundance; fertile, fruitful.
- fermionic — (physics) Of, pertaining to, or characteristic of fermions.
- ferocious — savagely fierce, as a wild beast, person, action, or aspect; violently cruel: a ferocious beating.
- fibriform — of the form of a fiber or fibers.
- fibrinoid — having the characteristics of fibrin.
- fibrinous — the insoluble protein end product of blood coagulation, formed from fibrinogen by the action of thrombin in the presence of calcium ions.
- fibrocyte — an inactive fibroblast
- fibroline — a yarn made from waste products at cotton factories
- fibrolite — sillimanite.
- fibrously — In a fibrous manner.
- fieldwork — Also, field work. work done in the field, as research, exploration, surveying, or interviewing: archaeological fieldwork.
- figure on — a numerical symbol, especially an Arabic numeral.
- film noir — a motion picture with an often grim urban setting, photographed in somber tones and permeated by a feeling of disillusionment, pessimism, and despair.
- filmgoers — Plural form of filmgoer.
- filoviral — Relating to filoviruses.
- filovirus — any of several filamentous, single-stranded RNA viruses of the family Filoviridae, defined by their unique appearance and reproductive strategies, as the Ebola and Marburg viruses.
- fioritura — the ornamentation of a melody, often extemporized by the performer, as in Italian opera during the 18th century.
- fire boss — a person who inspects a mine for the presence of noxious gases, dangerous roofs, and other hazards.
- fire door — a door through which a boiler or furnace is fired or through which the fire is inspected.
- fire hose — a special heavy-duty hose for use in fighting destructive fires.
- fire opal — a red Mexican opal, often with a color play.
- fire-plow — a stick that is rubbed in a wooden groove to produce sparks for igniting a fire.
- fireboard — a board used to close a fireplace.
- firebombs — Plural form of firebomb.
- fireboxes — Plural form of firebox.
- firefloat — a boat used for firefighting
- fireflood — a procedure designed to extract more oil from a well by injecting compressed air into the ground and burning some of the oil to increase the flow.
- firehorse — a horse used to pull a horse-drawn fire engine.
- firehouse — fire station.
- firelocks — Plural form of firelock.
- firepower — the capability of a military force, unit, or weapons system as measured by the amount of gunfire, number of missiles, etc., deliverable to a target.