21-letter words containing f, a, i, r, n, t
- differential operator — a function, usually expressed as a polynomial, that indicates linear combinations of the derivatives of the expression on which it operates.
- differential quotient — derivative (def 6).
- differential topology — the branch of topology that studies the properties of differentiable manifolds that remain invariant under diffeomorphisms.
- differential windlass — a pair of hoisting drums of different diameter turning at the same rate, such that a pulley suspended below them on a line wound on the larger drum and unwound from the smaller drum is raised with mechanical advantage.
- differential-quotient — something that has been derived.
- discriminant function — a linear function of measurements of different properties of an object or event that is used to assign the object or event to one population or another (discriminant analysis)
- drop the handkerchief — a children's game in which all the players but one stand in a circle facing inward, while that one player stealthily drops a handkerchief behind a player in the circle who must pursue and attempt to catch the one who dropped the handkerchief before the latter reaches the vacated place.
- electromagnetic field — a field of force associated with a moving electric charge equivalent to an electric field and a magnetic field at right angles to each other and to the direction of propagation
- faculty board meeting — a meeting of the governing body of a faculty
- financial underwriter — A financial underwriter is an insurance employee working in financial underwriting.
- first baron ashburton — Alexander, 1st Baron Ashburton, 1774–1848, British statesman.
- first consonant shift — the consonant shift described by Grimm's law, which distinguishes Germanic languages from other Indo-European languages.
- first-round financing — First round financing is the first time a new company raises money from investors.
- flotation compartment — in a boat, an enclosed section filled with air or gas to give buoyancy
- food conversion ratio — a ratio expressing the weight of food required to produce a unit gain in the live weight of an animal
- foreign exchange rate — the rate that specifies how much the currency of a nation is worth in terms of the currency of another nation
- forensic anthropology — the branch of physical anthropology in which anthropological data, criteria, and techniques are used to determine the sex, age, genetic population, or parentage of skeletal or biological materials in questions of civil or criminal law.
- fort lesley j. mcnair — a military reservation in SW Washington, D.C., on the Potomac River, SW of the Capitol.
- fractional extraction — Fractional extraction is a process of extracting a liquid from a liquid, in which two solutes are separated, with one leaving in the extract and one in the raffinate.
- fragmentation grenade — a grenade with a heavy metal casing that shatters, on exploding, into fragments that travel at high speed and with great force.
- framing specification — A specification of the "protocol bits" that surround the "data bits" on a communications channel to allow the data to be "framed" into chunks, like start and stop bits in EIA-232. It allows a receiver to synchronize at points along the data stream.
- franco-belgian system — French system.
- frankfort on the main — a city in W central Germany, on the Main River.
- fraudulent conversion — conversion committed with the intent to defraud
- free-floating anxiety — chronic anxiety occurring for no identifiable cause
- french fried potatoes — a more formal name for chips
- full faith and credit — the obligation under Article IV of the U.S. Constitution for each state to recognize the public acts, records, and judicial proceedings of every other state.
- functional illiterate — a person with some basic education who still falls short of a minimum standard of literacy or whose reading and writing skills are inadequate to everyday needs.
- functional imperative — a requirement for the survival of any social system, as communication, control of conflict, or socialization.
- general of the armies — a special rank held by John J. Pershing, equivalent to general of the army.
- glen of imaal terrier — a strongly-built medium-sized variety of terrier with a medium-length coat and short forelegs
- go (in) to bat for sb — If you go to bat for someone or go in to bat for them, you give them your support.
- grammatical inference — Deducing a grammar from given examples. Also known as "inductive inference" and recently as "computational learning".
- ground-effect machine — ACV (def 2).
- highest common factor — greatest common divisor. Abbreviation: H.C.F.
- identification papers — documents that serve to establish someone's identity
- identification parade — a group of persons including one suspected of having committed a crime assembled for the purpose of discovering whether a witness can identify the suspect
- in (or out of) phase — in (or not in) a state of exactly parallel movements, oscillations, etc.; in (or not in) synchronization
- in (or out of) place — in (or out of) the customary, proper, or assigned place
- in a state of undress — If someone is in a state of undress, they do not have all their clothes on.
- in favor/out of favor — If someone or something is in favor, people like or support them. If they are out of favor, people no longer like or support them.
- in the first instance — You say in the first instance to mention something that is the first step in a series of actions.
- infant mortality rate — number of babies dying
- infant welfare clinic — a medical facility that specializes in the health and well-being of young babies
- infectious ectromelia — ectromelia (def 2).
- infertility treatment — treatment aimed at helping a couple conceive
- infiltration capacity — the maximum rate at which a soil in a given condition will absorb water.
- inflationary universe — a version of the big bang theory in which the universe underwent very rapid growth during the first fraction of a second before it settled down to its current rate of expansion.
- information appliance — (hardware) (IA) A consumer device that performs only a few targeted tasks and is controlled by a simple touch-screen interface or push buttons on the device's enclosure.
- information gathering — the process of collecting information about something