13-letter words containing s, a, p, i, o
- supralittoral — of or relating to the biogeographic region of a shore of a lake, sea, or ocean permanently above water but made damp by spray from waves or by capillarity of the substrate.
- supranational — outside or beyond the authority of one national government, as a project or policy that is planned and controlled by a group of nations.
- suprarational — not understandable by reason alone; beyond rational comprehension.
- sympatholytic — opposing the effects of stimulation of the sympathetic nervous system.
- synaposematic — relating to synaposematism
- synophthalmia — cyclopia.
- syphilization — the act of syphilizing
- syphilophobia — the excessive fear of syphilis
- tachistoscope — an apparatus for use in exposing visual stimuli, as pictures, letters, or words, for an extremely brief period, used chiefly to assess visual perception or to increase reading speed.
- taphrogenesis — the process of forming rifts, resulting in regional faulting and subsidence
- tax inspector — a government official whose job is to make sure that people and companies are paying the right amount of tax
- temporariness — lasting, existing, serving, or effective for a time only; not permanent: a temporary need; a temporary job.
- terminal post — A terminal post is the terminal on a battery to which the battery lead is attached.
- terpsichorean — pertaining to dancing.
- the antipodes — Australia and New Zealand
- theanthropism — the doctrine of the union of the divine and human natures, especially the manifestation of God as man in Christ.
- thermoplastic — soft and pliable when heated, as some plastics, without any change of the inherent properties.
- thespian lion — a lion that attacked the flocks of Amphitryon and was killed by Hercules.
- thiophosphate — a salt or ester of thiophosphoric acid.
- tip one's hat — to take off, raise, or touch one's hat in salutation
- to go apeshit — to become crazy, enraged, or out of control
- topoisomerase — any of a class of enzymes that control the coiling of DNA molecules
- total eclipse — an eclipse in which the surface of the eclipsed body is completely obscured.
- total impulse — a measure of the maximum momentum that a given reaction engine and fuel supply can impart to a vehicle.
- toxicophagous — poison-eating
- toxoplasmosis — infection with the parasite Toxoplasma gondii, transmitted to humans by consumption of insufficiently cooked meat containing the parasite or by contact with contaminated cats or their feces: the illness produced is usually mild, but in pregnant women may damage the fetus.
- train spotter — a person who collects the numbers of railway locomotives
- trainspotting — hobby: observing trains
- transcription — the act or process of transcribing.
- transcriptome — a collection of all the messenger RNA in a particular cell
- transpiration — an action or instance of transpiring.
- transposition — an act of transposing.
- treponemiasis — infection with treponema; syphilis.
- triploblastic — having three primary germ layers, as the embryos of vertebrates.
- tropical fish — any of numerous small, usually brightly colored fishes, indigenous to the tropics, and often kept and bred in home aquariums.
- uncomplaisant — not eager to please; not compliant or obliging
- unimpassioned — not filled with passion or affected by strong emotion
- vapor tension — vapor pressure.
- vapourishness — the quality or state of being vapourish
- vino de pasto — a pale, dry sherry of Spain.
- visual foxpro — (database) A Microsoft database derived from Fox Software's FoxPRO.
- walter piston — Walter, 1894–1976, U.S. composer.
- watering spot — watering hole
- waterscorpion — any of several predaceous aquatic bugs of the family Nepidae, having clasping front legs and a long respiratory tube at the rear of the abdomen: capable of biting if handled.
- xiphiplastron — the fourth lateral plate of a turtle's plastron
- zinjanthropus — the genus to which Australopithecus boisei was formerly assigned.
- zoopraxiscope — an early type of motion-picture projector, designed by Eadweard Muybridge, in which the images were drawings or photographs placed along the rim of a circular glass plate, the shutter was a rotating opaque disk with radial slots, and a limelight source was used.
- zoosporangium — a sporangium or spore case in which zoospores are produced.
- zygosporangia — a sporangium that bears a zygospore.