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21-letter words containing h, e, r, p

  • red-headed woodpecker — a black and white North American woodpecker, Melanerpes erythrocephalus, having a red head and neck.
  • 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.
  • reinforcement therapy — a behavior modification technique in which appropriate behavior is strengthened through systematic reinforcement.
  • 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
  • roll with the punches — a thrusting blow, especially with the fist.
  • sb/sth reigns supreme — Someone or something that reigns supreme is the most important or powerful element in a situation or period of time.
  • schlieren photography — a type of photography which records schlieren
  • 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.
  • she stoops to conquer — a comedy (1773) by Oliver Goldsmith.
  • sheppard's correction — a method of correcting the bias in standard deviations and higher moments of distributions that arises from grouping values of the variable.
  • shut-in pressure test — A shut-in pressure test is a pressure test which is carried out after the well has been closed off for a particular time.
  • single spanish burton — a tackle having a runner as well as the fall supporting the load, giving a mechanical advantage of three, neglecting friction.
  • somatotrophic-hormone — a hormone secreted by the anterior pituitary gland, that stimulates growth in humans.
  • south pacific current — an ocean current that flows E in the South Pacific Ocean parallel to the Antarctic Circumpolar Current.
  • 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.
  • splice the main brace — to join together or unite (two ropes or parts of a rope) by the interweaving of strands.
  • 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.
  • st. christopher-nevis — St. Kitts-Nevis.
  • strachey, christopher — Christopher Strachey
  • sympathetic vibration — a vibration induced by resonance.
  • the acting profession — actors considered as a group
  • the apple of your eye — If you say that someone is the apple of your eye, you mean that they are very important to you and you are extremely fond of them.
  • the central provinces — the Canadian provinces of Ontario and Quebec
  • the cream of the crop — You can refer to the best people or things of a particular kind as the cream of the crop.
  • the end of one's rope — the end of one's endurance, resources, etc.
  • the joker in the pack — If you describe someone or something as the joker in the pack, you mean that they are different from the other people or things in their group, and can be unpredictable.
  • the oldest profession — prostitution
  • the origin of species — (On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life) a treatise (1859) by Charles Darwin setting forth his theory of evolution.
  • the press association — the national news agency for the United Kingdom and Ireland
  • the probation service — a criminal justice service that is mainly responsible for dealing with offenders by placing them under the supervision of a probation officer
  • the shipping forecast — a radio broadcast made by the BBC of weather reports and forecasts for the seas around the British Isles
  • the stars and stripes — the national flag of the United States of America, consisting of 50 white stars representing the present states on a blue field and seven red and six white horizontal stripes representing the original states
  • the supreme sacrifice — the sacrifice of one's life
  • theater of operations — the part of the theater of war, including a combat zone and a communications zone, that is engaged in military operations and their support.
  • theoretical physicist — a scientist who studies theoretical physics
  • therapeutic community — a group-based form of therapy for mental disorders, sometimes residential
  • thermal decomposition — Thermal decomposition is the process in which a chemical species breaks down when its temperature is increased.
  • thermal power station — a power station in which heat is converted into electricity
  • thermoelectric couple — thermocouple.
  • thermophosphorescence — thermoluminescence.
  • third party procedure — impleader.
  • third-party insurance — insurance that compensates for a loss to a party other than the insured for which the insured is liable.
  • three-toed woodpecker — either of two woodpeckers of the genus Picoides, of the Northern Hemisphere, having only three toes on each foot.
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