20-letter words containing h, e, l, i, o
- photoconductive cell — Electronics. a photocell whose resistance varies according to the intensity of light falling on it.
- photoelectric effect — the phenomenon in which the absorption of electromagnetic radiation, as light, of sufficiently high frequency by a surface, usually metallic, induces the emission of electrons from the surface.
- photogelatin process — collotype (def 1).
- phthalocyanine green — a pigment used in painting, derived from chlorinated copper phthalocyanine and characterized chiefly by its intense green color and permanence.
- physical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
- physical examination — an examination, usually by a physician, of a person's body in order to determine his or her state of health or physical fitness, as for military service or participation in a sport.
- physical meteorology — the branch of meteorology dealing with the study of optical, electrical, acoustical, and thermodynamic phenomena in the atmosphere, including the physics of clouds and precipitation.
- physiologic jaundice — a transitory jaundice that affects some infants for the first few days after birth.
- physiological saline — a salt solution that has the same osmotic pressure as that found in the blood or tissues
- pleased with oneself — If someone seems very satisfied with something they have done, you can say that they are pleased with themselves, especially if you think they are more satisfied than they should be.
- poza rica de hidalgo — a city in N Veracruz, in E Mexico.
- prepositional phrase — a phrase consisting of a preposition, its object, which is usually a noun or a pronoun, and any modifiers of the object, as in the gray desk I use.
- pseudo-psychological — of or relating to psychology.
- psychological moment — the proper or critical time for achieving a desired result: She found the right psychological moment to make her request.
- psychomotor epilepsy — temporal-lobe epilepsy.
- punch a (time) clock — to insert a timecard into a time clock when coming to or going from work
- pyroligneous alcohol — methyl alcohol.
- 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.
- rachel louise carson — Christopher ("Kit") 1809–68, U.S. frontiersman and scout.
- 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.
- 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.
- roller-blind shutter — curtain shutter.
- rough-winged swallow — either of two New World swallows of the genus Stelgidopteryx, having outer primary feathers with small barblike hooks on the margins.
- royal british legion — an organization founded in 1921 to provide services and assistance for former members of the armed forces
- saint john ambulance — an organization that provides first aid and first-aid training
- 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
- schizoid personality — sb with identity disorder
- season ticket holder — a person who has a season ticket
- see the light of day — come into being
- semiautobiographical — pertaining to or being a fictionalized account of an author's own life.
- set the ball rolling — to open or initiate (an action, discussion, movement, etc)
- settle accounts with — to pay or receive a balance due
- 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.
- shoulder-length hair — hair that reaches a person's shoulders
- silicon tetrahydride — silane (def 1).
- size-weight illusion — a standard sense illusion that a small object is heavier than a large object of the same weight
- 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.
- 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.
- south atlantic ocean — the part of the Atlantic Ocean extending S from the Equator to the Antarctic continent.
- south orkney islands — an uninhabited group of islands in the S Atlantic, southeast of Cape Horn: formerly a dependency of the Falkland Islands; part of the British Antarctic Territory since 1962 (claims are suspended under the Antarctic Treaty). Area: 621 sq km (240 sq miles)
- southern oscillation — a low-latitude fluctuation of atmospheric pressure closely linked with El Niño events, specifically the periods of El Niño warming and La Niña cooling.
- spanish oyster plant — a composite plant, Scolymus hispanicus, of southern Europe, having spiny, thistlelike leaf margins, small yellow flowers, and an edible root.
- spatial technologies — (company) Distributors of the ACIS solid modelling engine.
- special relationship — the exceptionally close political, diplomatic, cultural and historical relations between the United States and the United Kingdom
- spectrophotoelectric — pertaining to the relationship between the wavelength of the incident radiation and the number of electrons released by a photoelectric substance.
- spherical aberration — variation in focal length of a lens or mirror from center to edge, due to its spherical shape.
- spherical coordinate — 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.