21-letter words containing f, d, m
- lost-and-found column — a column in a newspaper that carries advertisements from people who have lost or found things
- luminous flux density — luminous flux per unit of cross-sectional area.
- made of sterner stuff — If you say that someone is made of sterner stuff, you mean that they have a strong personality and are capable of overcoming difficulties and problems.
- magnetic flux density — Also called magnetic flux density. a vector quantity used as a measure of a magnetic field. Symbol: B.
- magnetofluid dynamics — magnetohydrodynamics.
- magnificent riflebird — a bird of paradise, Craspedophora magnifica
- mayor of casterbridge — a novel (1886) by Thomas Hardy.
- member of the wedding — a novel (1946) and play (1950) by Carson McCullers.
- 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.
- 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.
- nominative of address — a noun naming the person to whom one is speaking.
- of time and the river — a novel (1935) by Thomas Wolfe.
- pacific daylight time — the version of Pacific Standard Time that is in use when daylight saving time is being observed
- pacific standard time — See under standard time.
- performance indicator — a quantitative or qualitative measurement, or any other criterion, by which the performance, efficiency, achievement, etc of a person or organization can be assessed, often by comparison with an agreed standard or target
- record of achievement — a statement of the personal and educational development of each pupil
- saint-maur-des-fosses — a town in N central France, near Paris, on the Marne River.
- schema definition set — (SDS) Something in Portable Common Tool Environment.
- 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.
- stem-and-leaf diagram — a histogram in which the data points falling within each class interval are listed in order
- step-down transformer — a device that transfers an alternating current from one circuit to one or more other circuits with a decrease of voltage
- the middle of nowhere — remote place
- to put you in mind of — If something puts you in mind of something else, it reminds you of it because it is similar to it or is associated with it.
- to risk life and limb — If someone risks life and limb, they do something very dangerous that may cause them to die or be seriously injured.
- to take your mind off — If something takes your mind off a problem or unpleasant situation, it helps you to forget about it for a while.
- universal disk format — (storage, standard) (UDF) A CD-ROM file system standard that is required for DVD ROMs. UDF is the OSTA's replacement for the ISO 9660 file system used on CD-ROMs, but will be mostly used on DVD. DVD multimedia disks use UDF to contain MPEG audio and video streams. To read DVDs you need a DVD drive, the kernel driver for the drive, MPEG video support, and a UDF driver. DVDs containing both UDF filesystems and ISO 9660 filesystems can be read without UDF support. UDF can also be used by CD-R and CD-RW recorders in packet writing mode.
- until the end of time — If you say that something will happen or be true until the end of time or to the end of time, you are emphasizing that it will always happen or always be true.
- weak head normal form — (reduction, theory) (WHNF) A lambda expression is in weak head normal form (WHNF) if it is a head normal form (HNF) or any lambda abstraction. I.e. the top level is not a redex. The term was coined by Simon Peyton Jones to make explicit the difference between head normal form (HNF) and what graph reduction systems produce in practice. A lambda abstraction with a reducible body, e.g. \ x . ((\ y . y+x) 2) is in WHNF but not HNF. To reduce this expression to HNF would require reduction of the lambda body: (\ y . y+x) 2 --> 2+x Reduction to WHNF avoids the name capture problem with its need for alpha conversion of an inner lambda abstraction and so is preferred in practical graph reduction systems. The same principle is often used in strict languages such as Scheme to provide call-by-name evaluation by wrapping an expression in a lambda abstraction with no arguments: D = delay E = \ () . E The value of the expression is obtained by applying it to the empty argument list: