12-letter words containing a, r, o, l, i
- fissirostral — having a broad, deeply cleft beak or bill, as the swallows and goatsuckers.
- flabelliform — Shaped like a fan; flabellate.
- flag officer — a naval officer above the rank of captain, as a fleet admiral, admiral, vice-admiral, rear admiral, or commodore, who is entitled to display a flag indicating his or her rank.
- flagelliform — long, slender, and flexible, like the lash of a whip.
- flammiferous — flame-producing
- flavoprotein — an enzyme, containing riboflavin and linked chemically with a protein, active in the oxidation of foods in animal cells.
- flight arrow — an arrow having a conical or pyramidal head without barbs.
- float bridge — a bridge, as from a pier to a boat, floating at one end and hinged at the other to permit loading and unloading at any level of water.
- 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.
- florida keys — chain of small islands extending southwest from the S tip of Fla.
- florida moss — Spanish moss.
- florida room — a sunroom.
- flow breccia — a volcanic breccia that has solidified from a lava flow.
- flowcharting — (computing) the design and construction of flowcharts.
- fluorapatite — a crystalline mineral, Ca 5 (PO 4) 3 F, formed from hydroxyapatite in the presence of fluoride, that has a hardening effect on bones and teeth.
- 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.
- fluorouracil — a pyrimidine analog, C 4 H 3 FN 2 O 2 , used in the treatment of certain cancers.
- 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.
- foolhardiest — Superlative form of foolhardy.
- for a giggle — as a joke or prank; not seriously
- for all time — forever, for eternity
- forbearingly — In a forbearing manner.
- fore-topsail — a topsail set on a foremast on a ship.
- foreign-flag — (of a vessel or aircraft) having a registry under a nationality other than one's own: rivalry between U.S.-flag freighters and foreign-flag ships.
- forensically — pertaining to, connected with, or used in courts of law or public discussion and debate.
- forestalling — Present participle of forestall.
- forestaysail — a triangular sail set on a forestay; the innermost headsail of a vessel.
- foretopsails — Plural form of foretopsail.
- foretriangle — the triangular area formed by the deck, foremast, and headstay of a sailing vessel
- forgeability — (metallurgy) The quality or degree of being forgeable.
- formal logic — the branch of logic concerned exclusively with the principles of deductive reasoning and with the form rather than the content of propositions.
- formalizable — Capable of being formalized.
- formula milk — An artificial substitute for breast milk intended for feeding infants. It can come in powdered form to be mixed with water or in instant liquid form.
- formula unit — (of an ionic compound that does not form molecules, as most salts) the chemical formula with the least number of elements out of the set of empirical formulas having the same proportion of ions as elements: NaCl is the formula unit for the ionic compound sodium chloride.
- formularized — Simple past tense and past participle of formularize.
- formularizer — One who formularizes.
- formularizes — Third-person singular simple present indicative form of formularize.
- formulations — Plural form of formulation.
- fort laramie — a city in SE Wyoming.
- fort pulaski — Count Casimir [kaz-uh-meer] /ˈkæz əˌmɪər/ (Show IPA), 1748–79, Polish patriot; general in the American Revolutionary army.
- fort william — a port in W Ontario, in S Canada, on Lake Superior: created in 1970 by the merger of twin cities (Fort William and Port Arthur) and two adjoining townships.
- forward line — the soldiers at the forward most position in an army force
- four-walling — a form of distribution and exhibition, esp. of films, in which a distributor or producer rents a theater for a fixed amount, pays all advertising and operating costs, and collects all box-office receipts
- fractionally — pertaining to fractions; comprising a part or the parts of a unit; constituting a fraction: fractional numbers.
- francophilia — Alternative capitalization of Francophilia.