12-letter words containing p, a, i, l, o
- role playing — role-play used as a method of training or education
- role-playing — a method of instruction or psychotherapy aimed at changing attitudes and behavior, in which participants act out designated roles relevant to real-life situations.
- rolling plan — a plan which is designed to continue over a period of time and is subject to regular review and updating
- saddle point — a point at which a function of two variables has partial derivatives equal to zero but at which the function has neither a maximum nor a minimum value.
- salpiglossis — any solanaceous plant of the Chilean genus Salpiglossis, some species of which are cultivated for their bright funnel-shaped flowers
- salpingotomy — incision of a Fallopian tube.
- sample point — a possible result of an experiment, represented as a point.
- saprobiology — the branch of ecology that studies decaying organic matter or environments, especially saprophytes that derive nourishment in this way.
- scalp lotion — A scalp lotion is a liquid medication for the treatment of scalp conditions and disorders.
- scopes trial — John Thomas, 1901–70, U.S. high-school teacher whose teaching of the Darwinian theory of evolution became a cause célèbre (Scopes Trial or Monkey Trial) in 1925.
- scopophiliac — the obtaining of sexual pleasure by looking at nude bodies, erotic photographs, etc.
- scoptophilia — the obtaining of sexual pleasure by looking at nude bodies, erotic photographs, etc.
- scrophularia — a member of a genus of flowering plants which have a square stem and are known as figworts
- semi-popular — regarded with favor, approval, or affection by people in general: a popular preacher.
- semitropical — subtropical.
- signal corps — a branch of the army responsible for military communications, meteorological studies, and related work.
- simplon pass — a pass over the Lepontine Alps in S Switzerland, between Brig (Switzerland) and Iselle (Italy). Height: 2009 m (6590 ft)
- slumpflation — a situation in which economic depression is combined with increasing inflation
- smoking lamp — formerly, a lamp aboard ship for lighting pipes, now used figuratively to indicate when smoking is or is not allowed: The smoking lamp is lit.
- sophomorical — characteristic of a sophomore
- span loading — the act of a person or thing that loads.
- spasmophilia — a condition in which only moderate mechanical or electrical stimulation produces spasms, convulsions, or tetany.
- spasmophilic — of or noting spasmophilia.
- special sort — a character, such as an accented letter, that is not a usual member of any font
- speciational — relating to speciation
- spectatorial — a person who looks on or watches; onlooker; observer.
- sphacelation — the process of mortification
- spiflication — rough treatment
- spinal block — spinal anesthesia.
- spiral-bound — having a spiral binding.
- spirochaetal — resulting from spirochaetes
- splenization — the transformation of something into a spleenlike tissue
- spongillafly — spongefly.
- spongioblast — one of the primordial cells in the embryonic brain and spinal cord capable of developing into neuroglia.
- sporadically — (of similar things or occurrences) appearing or happening at irregular intervals in time; occasional: sporadic renewals of enthusiasm.
- sporangiolum — a small sporangium
- sportability — suitability to be used in or as a sport
- spotsylvania — a village in NE Virginia: the scene of Civil War battles between the armies of Grant and Lee, May 8–21, 1864.
- spotted tail — (Sinte-galeshka) 1833?–81, Brulé Sioux leader.
- stabilograph — an instrument for measuring body sway.
- state police — a police force under state authority rather than under the authority of a city or county in the state.
- stipulaceous — of, relating to, having, resembling, or living on stipules
- strophiolate — having a strophiole
- stylographic — of or relating to a stylograph.
- sub-tropical — Sub-tropical places have a climate that is warm and wet, and are often near tropical regions.
- subapostolic — of or relating to the era after that of the Apostles
- suboccipital — situated below the occipital bone or the occipital lobe of the brain.
- sulphadoxine — an antibiotic drug of the sulphonamide group, commonly used in combination with pyrimethamine to treat malaria, and in combination with various drugs to treat certain infections
- sulphonamide — any of a class of organic compounds that are amides of sulphonic acids containing the group –SO2NH2 or a group derived from this. An important class of sulphonamides are the sulfa drugs
- sulphonation — the action or process of converting or being converted into a sulphonate