21-letter words containing h, o, l, e
- 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.
- psychoneuroimmunology — the study of the effects of psychological factors on the immune system
- pull oneself together — to draw or haul toward oneself or itself, in a particular direction, or into a particular position: to pull a sled up a hill.
- purple-fringed orchid — either of two orchids, Habenaria fimbriata or H. psycodes, of eastern North America, having a cluster of fragrant purple flowers with a fringed lip.
- purple-fringed orchis — either of two North American orchids (Habenaria psycodes and H. fimbriata) with purple-fringed flowers
- ralph roister doister — a play (1553?) by Nicholas Udall: the earliest known English comedy.
- rap over the knuckles — to reprimand
- rayleigh distribution — (mathematics) A curve that yields a good approximation to the actual labour curves on software projects.
- reciprocal inhibition — the theory that the pairing of an anxiety-provoking stimulus with anxiety-reducing reactions will weaken the association between the stimulus and the anxiety.
- reconnaissance flight — a flight made by an aircraft in order to obtain military information about a particular place
- rectangular hyperbola — a hyperbola with perpendicular asymptotes
- redlegged grasshopper — a migratory grasshopper, Melanoplus femur-rubrum, of the southwestern and midwestern U.S., having reddish skin on the underside of the hind legs: an agricultural pest.
- rehabilitation centre — a centre or clinic where people with an alcohol or drug addiction are treated
- replacement algorithm — The method used to determine which entry in an associative cache to flush to main memory when it is desired to cache a new block of data. The "least recently used" algorithm flushed the block which has not been accessed for the longest time. A random replacement algorithm picks any block with equal probability.
- return the compliment — repay sb's kindness with a kind act
- reverse polish syntax — postfix notation
- richard coeur de lion — ("Richard the Lion-Hearted"; "Richard Coeur de Lion") 1157–99, king of England 1189–99.
- roll with the punches — a thrusting blow, especially with the fist.
- rolling in the aisles — (of an audience) overcome with laughter
- safe in the knowledge — If you do something safe in the knowledge that something else is the case, you do the first thing confidently because you are sure of the second thing.
- salam-weinberg theory — the electroweak theory.
- schlieren photography — a type of photography which records schlieren
- school of the soldier — an institution where instruction is given, especially to persons under college age: The children are at school.
- school superintendent — an official whose job is to oversee school administration within a district
- schoolgirl complexion — a smooth, clear complexion, such as schoolgirls are considered to have
- scorched earth policy — a military practice of devastating the property and agriculture of an area before abandoning it to an advancing enemy.
- scorched-earth policy — a military practice of devastating the property and agriculture of an area before abandoning it to an advancing enemy.
- secure hash algorithm —
- self-characterization — portrayal; description: the actor's characterization of a politician.
- set the world on fire — the earth or globe, considered as a planet.
- settle someone's hash — a dish of diced or chopped meat and often vegetables, as of leftover corned beef or veal and potatoes, sautéed in a frying pan or of meat, potatoes, and carrots cooked together in gravy.
- silicon tetrachloride — a colorless, fuming liquid, SiCl 4 , used chiefly for making smoke screens and various derivatives of silicon.
- single spanish burton — a tackle having a runner as well as the fall supporting the load, giving a mechanical advantage of three, neglecting friction.
- skeleton at the feast — a person or event that brings gloom or sadness to an occasion of joy or celebration
- sodium metabisulphite — an inorganic compound with the chemical formula Na2S2O5 that is used as a preservative, antioxidant and disinfectant
- south gloucestershire — a unitary authority of SW England, in Gloucestershire: formerly (1975–96) part of the county of Avon. Pop: 246 800 (2003 est). Area: 510 sq km (197 sq miles)
- sovereign wealth fund — an investment fund created using the financial assets of a national government
- space shuttle orbiter — orbiter (def 1).
- spherical coordinates — Usually, spherical coordinates. any of three coordinates used to locate a point in space by the length of its radius vector and the angles this vector makes with two perpendicular polar planes.
- spicebush swallowtail — a swallowtail butterfly, Papilio troilus, having a dark body with yellow spots on the forewings and greenish hind wings.
- sport utility vehicle — a rugged vehicle with a trucklike chassis and four-wheel drive, designed for occasional off-road use. Abbreviation: SUV.
- sport-utility vehicle — a rugged vehicle with a trucklike chassis and four-wheel drive, designed for occasional off-road use. Abbreviation: SUV.
- spotted alfalfa aphid — a pale yellowish aphid, Therioaphis maculata, of the southern U.S., especially west of the Mississippi River, that is marked with black spots and has fine spines on its back: a pest mainly of alfalfa and some other legumes, as clover.
- steal someone's heart — to cause someone to feel love or affection
- steer clear of sb/sth — If you steer clear of someone or something, you deliberately avoid them.
- stockholder of record — a stockholder or his or her agent whose name is registered on the books of the issuing corporation at the close of a business day set for determining that stockholders shall receive dividends or vote on an issue.
- sunday school teacher — someone who teaches at a Sunday school
- take sb/sth seriously — If you take someone or something seriously, you believe that they are important and deserve attention.
- tartarian honeysuckle — an Asian honeysuckle, Lonicera tatarica, having fragrant, white to pink flowers.
- the antipodes islands — a group of small uninhabited islands in the South Pacific, southeast of and belonging to New Zealand. Area: 62 sq km (24 sq miles)