20-letter words containing o, r, t, h
- psychiatric hospital — institution treating mental disorders
- psychometric testing — the use of psychometric tests, often as a selection method
- psychomotor epilepsy — temporal-lobe epilepsy.
- put the hard word on — to ask or demand something from
- pythagoras's theorem — (mathematics) The theorem of geometry, named after Pythagoras, of Samos, Ionia, stating that, for a right-angled triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides. I.e. if the longest side has length A and the other sides have lengths B and C (in any units), A^2 = B^2 + C^2 (2004-02-12)
- quaker meeting house — a place where Quakers gather for worship
- quantum cryptography — a method of coding information based on quantum mechanics, which is said to be unbreakable
- quantum field theory — any theory in which fields are treated by the methods of quantum mechanics; each field can then be regarded as consisting of particles of a particular kind, which may be created and annihilated.
- quarantine anchorage — an anchorage for ships awaiting a pratique.
- queen of the prairie — a tall plant, Filipendula rubra, of the rose family, having branching clusters of pink flowers, growing in meadows and prairies.
- quick on the trigger — quick to fire a gun
- read the riot act to — to command to stop doing something regarded as wrong, under threat of punishment
- recreational therapy — therapy by means of recreational activities engaged in by the patient
- recreational vehicle — a van or utility vehicle used for recreational purposes, as camping, and often equipped with living facilities. Abbreviation: RV.
- return from the dead — (jargon) To regain access to the net after a long absence. Compare person of no account.
- return of the native — a novel (1878) by Thomas Hardy.
- rheumatoid arthritis — a chronic autoimmune disease characterized by inflammation of the joints, frequently accompanied by marked deformities, and ordinarily associated with manifestations of a general, or systemic, affliction.
- ring of the nibelung — Richard Wagner's tetralogy of music dramas: Das Rheingold (completed 1869), Die Walküre (completed 1870), Siegfried (completed 1876), and Götterdämmerung (completed 1876): the cycle was first performed at Bayreuth, 1876.
- ringing off the hook — If your phone is ringing off the hook, so many people are trying to telephone you that it is ringing constantly.
- rise to the occasion — to have the courage, wit, etc, to meet the special demands of a situation
- rocky mountain sheep — bighorn.
- roller-blind shutter — curtain shutter.
- royal british legion — an organization founded in 1921 to provide services and assistance for former members of the armed forces
- rub sb's nose in sth — To rub someone's nose in something that they do not want to think about, such as a failing or a mistake they have made, means to remind them repeatedly about it.
- rub up the wrong way — to arouse anger (in); annoy
- run off at the mouth — Anatomy, Zoology. the opening through which an animal or human takes in food. the cavity containing the structures used in mastication. the structures enclosing or being within this cavity, considered as a whole.
- saint anthony's fire — any of certain skin conditions that are of an inflammatory or gangrenous nature, as erysipelas, hospital gangrene, or ergotism.
- satellite chromosome — a type of densely staining chromosome of uncertain biological function, found in many plant and animal species.
- satellite photograph — a photograph taken by an artificial satellite from space
- scatter site housing — public housing, especially for low-income families, built throughout an urban area rather than being concentrated in a single neighborhood.
- schizoid personality — sb with identity disorder
- schrodinger equation — the wave equation of nonrelativistic quantum mechanics. Also called Schrödinger wave equation. Compare wave equation (def 2).
- season ticket holder — a person who has a season ticket
- semiautobiographical — pertaining to or being a fictionalized account of an author's own life.
- serve a person right — to pay a person back, esp for wrongful or foolish treatment or behaviour
- set the ball rolling — to open or initiate (an action, discussion, movement, etc)
- sex change operation — a surgical operation designed to change a person's physical sexual characteristics to those of the opposite sex
- shakespearean sonnet — a sonnet form used by Shakespeare and having the rhyme scheme abab, cdcd, efef, gg.
- shareholders' equity — Shareholders' equity is the total amount of ownership investment in a company.
- sharp-tailed sparrow — a sparrow, Ammospiza caudacuta, inhabiting salt marshes in North America, having narrow, sharply pointed tail feathers.
- shear transformation — a map of a coordinate space in which one coordinate is held fixed and the other coordinate or coordinates are shifted.
- short back and sides — If a man has a short back and sides, his hair is cut very short at the back and sides with slightly thicker, longer hair on the top of the head.
- short message system — A short message system is a way of sending short written messages from one mobile phone to another. The abbreviation SMS is also used.
- shoulder to shoulder — the part of each side of the body in humans, at the top of the trunk, extending from each side of the base of the neck to the region where the arm articulates with the trunk.
- shoulder-length hair — hair that reaches a person's shoulders
- silicon tetrahydride — silane (def 1).
- slip through the net — If criminals slip through the net, they avoid being caught by the system or trap that was meant to catch them.
- software methodology — (programming) The study of how to navigate through each phase of the software process model (determining data, control, or uses hierarchies, partitioning functions, and allocating requirements) and how to represent phase products (structure charts, stimulus-response threads, and state transition diagrams).
- soke of peterborough — a former administrative unit of E central England, generally considered part of Northamptonshire or Huntingdonshire: absorbed into Cambridgeshire in 1974
- south american plate — a major tectonic division of the earth's crust, comprising the continent of South America and several ocean basins and bounded on the north by the Caribbean Plate, on the east by the Mid-Atlantic Ridge, on the west by a submarine trench that borders the western coast of the continent, and on the south by the Antarctic Plate.