21-letter words containing c, a, l, f
- modulus of elasticity — the ratio of the stress applied to a body or substance to the resulting strain within the elastic limit
- mother-of-pearl cloud — nacreous cloud.
- multiplication factor — the ratio of the number of neutrons in a generation to the number of neutrons in the previous generation: when the multiplication factor is equal to or greater than one, a chain reaction is possible
- muon-catalysed fusion — an experimental form of nuclear fusion in which hydrogen and deuterium muonic atoms are formed. Because the mass of the muon is much larger than that of the electron, the atoms are smaller, and the nuclei are close enough for fusion to occur
- myocardial infarction — heart attack. Abbreviation: MI.
- nellis air force base — the largest air base in the U.S. Air Force's Tactical Air Command, located near Las Vegas, Nev., and developed from what began in 1941 as a U.S. Army Air Corps field.
- nitrosylsulfuric acid — a clear, straw-colored, oily, corrosive liquid, HNO 5 S, used chiefly in the manufacture of dyes.
- open telecom platform — (communications, library) (OTP) A set of standard, open source libraries and tools for use with Erlang.
- pacific daylight time — the version of Pacific Standard Time that is in use when daylight saving time is being observed
- partial reinforcement — the process of randomly rewarding an organism for making a response on only some of the occasions it makes it
- performance appraisal — the assessment, at regular intervals, of an employee's performance at work
- peroxydisulfuric acid — persulfuric acid (def 2).
- piero della francesca — Piero della [pee-air-oh del-uh;; Italian pye-raw del-lah] /piˈɛər oʊ ˈdɛl ə;; Italian ˈpyɛ rɔ ˈdɛl lɑ/ (Show IPA), (Piero dei Franceschi) c1420–92, Italian painter.
- place of articulation — the location at which two speech organs approach or come together in producing a speech sound, as in the contact of the tongue and the teeth to form a dental sound. Also called point of articulation. Compare articulator (def 2).
- place of safety order — (in Britain) under the Children and Young Persons Act 1969, an order granted by a justice to a person or agency granting authority to detain a child or young person and take him or her to a place of safety for not more than 28 days, because of the child's actual or likely ill-treatment or neglect, etc
- play with a full deck — Nautical. a floorlike surface wholly or partially occupying one level of a hull, superstructure, or deckhouse, generally cambered, and often serving as a member for strengthening the structure of a vessel. the space between such a surface and the next such surface above: Our stateroom was on B deck.
- point of articulation — place of articulation.
- professional services — (job) A department of a supplier providing consultancy and programming manpower for the supplier's products.
- psychological warfare — the use of propaganda, threats, and other psychological techniques to mislead, intimidate, demoralize, or otherwise influence the thinking or behavior of an opponent.
- reconnaissance flight — a flight made by an aircraft in order to obtain military information about a particular place
- sales finance company — a finance company that purchases, at a discount, installment contracts from dealers or that finances retail sales.
- scarlet monkey flower — any of various plants belonging to the genus Mimulus, of the figwort family, as M. cardinalis (scarlet monkey flower) having spotted flowers that resemble a face.
- school of hard knocks — the experience gained from living, especially from disappointment and hard work, regarded as a means of education: The only school he ever attended was the school of hard knocks.
- self-characterization — portrayal; description: the actor's characterization of a politician.
- semantic differential — a technique for measuring the connotative meaning of concepts by having an individual rate each concept on a series of graduated scales, each scale defined by a pair of polar adjectives, as good–bad or strong–weak.
- silicon tetrafluoride — a colorless, fuming gas, SiF 4 , used chiefly in the manufacture of fluosilicic acid.
- social stratification — the act or an instance of stratifying.
- split-screen facility — a facility allowing different scenes to be shown on screen at the same time
- statistical inference — the theory, methods, and practice of forming judgments about the parameters of a population, usually on the basis of random sampling
- steer clear of sb/sth — If you steer clear of someone or something, you deliberately avoid them.
- surface of revolution — a surface formed by revolving a plane curve about a given line.
- tetrabromofluorescein — eosin (def 1).
- the fall of the cards — the chance distribution of cards in a given deal
- the flickertail state — a name for the state of North Dakota
- the rock of gibraltar — a limestone promontory at the tip of S Spain
- to fly in the face of — If an action or belief flies in the face of accepted ideas or rules, it seems to completely oppose or contradict them.
- to play second fiddle — If you play second fiddle to someone, your position is less important than theirs in something that you are doing together.
- topgallant forecastle — a partial weather deck on top of a forecastle superstructure; forecastle deck.
- traffic control tower — an elevated structure for the visual observation and control of the air and ground traffic at an airport
- university of iceland — (body, education) The Home of Fjolnir.
- virginia (rail) fence — a zigzag fence made of rails laid across one another at the ends
- volunteers of america — a religious reform and relief organization, similar to the Salvation Army, founded in New York City in 1896 by Ballington Booth, son of William Booth, the founder of the Salvation Army. Abbreviation: VOA.
- warm silence software — A small company run by(?) Robin Watts, producing software for the Acorn Archimedes.
- without qualification — If something is stated or accepted without qualification, it is stated or accepted as it is, without the need for any changes.