12-letter words containing n, o, i, r
- fibrillation — the formation of fibrils.
- fibrinogenic — producing fibrin.
- fibrinolysin — a proteolytic enzyme, formed in the blood from plasminogen, that causes the breakdown of the fibrin in blood clots.
- fibrinolysis — the disintegration or dissolution of fibrin, especially by enzymatic action.
- fibrinolytic — the disintegration or dissolution of fibrin, especially by enzymatic action.
- fibroadenoma — a benign tumor originating from glandular tissue, as in the female breast.
- field cornet — a commander of burgher troops called up in time of war or in an emergency, esp during the 19th century
- field ration — ration issued and authorized for troops in the field.
- fingerboards — Plural form of fingerboard.
- fingerflower — purple foxglove.
- finno-ugrian — pertaining to the Finns and the Ugrians.
- fire balloon — a montgolfier.
- fire company — a company of firefighters.
- fire control — technical and sometimes automatic supervision of artillery or naval gunfire on a target, as for range, elevation, etc.
- fire station — a building in which firefighting apparatus and usually fire department personnel are housed; firehouse.
- fireproofing — the act or process of rendering fireproof.
- firing order — the sequence of ignition in the cylinders of an internal-combustion engine
- first cousin — cousin (def 1).
- first nation — any of the indigenous peoples or Indian communities of Canada, especially one formally recognized by the Canadian government.
- first person — the grammatical person used by a speaker in statements referring to himself or herself (first person singular) or to a group including himself or herself (first person plural)
- first violin — one of the principal group of violins in an orchestra
- fisherperson — A fisherman or fisherwoman.
- fishing port — a town which has a lot of fishing boats
- fishing worm — an earthworm.
- fishmonger's — a shop that sells fish
- fitness room — a room with gym equipment in it
- fitting room — a room, as in a clothing store, where garments are tried on and measurements taken for alterations or other changes.
- flavoprotein — an enzyme, containing riboflavin and linked chemically with a protein, active in the oxidation of foods in animal cells.
- fleet prison — (formerly) a London prison, esp used for holding debtors
- flindermouse — (obsolete) A bat (the mammal).
- floating rib — one member of the two lowest pairs of ribs, which are attached neither to the sternum nor to the cartilages of other ribs.
- flooring saw — a saw having a curved edge.
- flop forging — forging of both sides of a piece from the same die, the sides being identical.
- flourishment — The act or state of flourishing.
- flowcharting — (computing) the design and construction of flowcharts.
- fluoresceine — Alternative spelling of fluorescein.
- fluoridating — Present participle of fluoridate.
- fluoridation — the addition of fluorides to the public water supply to reduce the incidence of tooth decay.
- fluorinating — Present participle of fluorinate.
- fluorination — (chemistry) The introduction of fluorine into a compound by means of a chemical reaction.
- flusteration — (colloquial, dated) The act of flustering, or the state of being flustered.
- fluviomarine — of or formed by the combined action of river and sea.
- foetoprotein — Alternative spelling of fetoprotein.
- folding door — a door with hinged sections that can be folded flat against one another when opened.
- folding rule — a rule composed of light strips of wood joined by rivets so as to be foldable, all the opening and closing parts being in parallel planes.
- footdragging — the act or practice of acting with deliberate slowness
- for instance — a case or occurrence of anything: fresh instances of oppression.
- for-instance — an instance or example: Give me a for-instance of what you mean.
- foraging ant — any of several ants, as army ants, that forage as part of a large group.
- foraminifera — any chiefly marine protozoan of the sarcodinian order Foraminifera, typically having a linear, spiral, or concentric shell perforated by small holes or pores through which pseudopodia extend.