15-letter words containing r, u, s, h, t, o
- natural history — the sciences, as botany, mineralogy, or zoology, dealing with the study of all objects in nature: used especially in reference to the beginnings of these sciences in former times.
- neo-lutheranism — a movement begun in the 19th century in Germany and Scandinavia to revive the orthodox principles, beliefs, and practices of the Lutheran Church.
- neuroprosthesis — A prosthesis used to improve the function of an impaired nervous system.
- neuropsychiatry — the branch of medicine dealing with diseases involving the mind and nervous system.
- north australia — a former division of Australia; now part of the Northern Territory.
- north caucasian — a language family including all the Caucasian languages north of the Caucasian divide, as Kabardian and the Circassian language proper, and a few between the divide and the Black Sea, as Abkhazian.
- nyquist theorem — (communications) A theorem stating that when an analogue waveform is digitised, only the frequencies in the waveform below half the sampling frequency will be recorded. In order to reconstruct (interpolate) a signal from a sequence of samples, sufficient samples must be recorded to capture the peaks and troughs of the original waveform. If a waveform is sampled at less than twice its frequency the reconstructed waveform will effectively contribute only noise. This phenomenon is called "aliasing" (the high frequencies are "under an alias"). This is why the best digital audio is sampled at 44,000 Hz - twice the average upper limit of human hearing. The Nyquist Theorem is not specific to digitised signals (represented by discrete amplitude levels) but applies to any sampled signal (represented by discrete time values), not just sound.
- odontorhynchous — (of birds) having toothlike ridges inside the beak
- okhotsk current — a cold ocean current flowing SW from the Bering Sea, E of the Kurile Islands, along the E coast of Japan where it meets the Japan Current.
- one's last hour — the time of one's death
- ornithorhynchus — the platypus.
- outdoorsmanship — a person devoted to outdoor sports and recreational activities, as hiking, hunting, fishing, or camping.
- over-enthusiasm — absorbing or controlling possession of the mind by any interest or pursuit; lively interest: He shows marked enthusiasm for his studies.
- overthrust belt — an elongate area in which thick rock layers have been pushed over one another by compressional forces within the earth's crust.
- oyster mushroom — oyster cap.
- phosphate group — the group or radical obtained by removal of one or more hydrogen atoms from phosphoric acid.
- photojournalism — journalism in which photography dominates written copy, as in certain magazines.
- pithecanthropus — a former genus of extinct hominids whose members have now been assigned to the proposed species Homo erectus.
- protospatharius — (of the Byzantine empire) a high-ranking official in the imperial guard
- pseudoarthrosis — a joint formed by fibrous tissue bridging the gap between the two fragments of bone of an old fracture that have not united
- pseudonephritis — a condition, thought to be benign, in which microscopic amounts of blood and protein are present in the urine, occurring commonly among athletes after strenuous exercise.
- pulchritudinous — physically beautiful; comely.
- quasihistorical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- religious right — US right-wing Christian movement
- rhesus positive — relating to blood containing Rhesus antigen D
- rheumatism-root — spotted wintergreen.
- right of asylum — the right of alien fugitives to protection or nonextradition in a country or its embassy.
- round the twist — mad; eccentric
- round whitefish — a whitefish, Prosopium cylindraceum, found in northern North America and Siberia, having silvery sides and a dark bronze back.
- rub elbows with — the bend or joint of the human arm between upper arm and forearm.
- sarcenchymatous — relating to the connective tissue of some sponges
- scatter cushion — Scatter cushions are small cushions for use on sofas and chairs.
- schola cantorum — an ecclesiastical choir or choir school.
- scotch foursome — foursome (def 2b).
- self-authorized — given or endowed with authority: an authorized agent.
- shoulder-length — Shoulder-length hair is long enough to reach your shoulders.
- shroud of turin — a linen cloth kept in the Cathedral of Turin, Italy, since the late 1500s that bears a faint life-size human image venerated by some as the imprint of the dead body of Jesus.
- shut your mouth — stop talking
- sir arthur john — Sir (Arthur) John, 1904–2000, English actor and director.
- sodium chlorate — a colorless, water-soluble solid, NaClO 3 , cool and salty to the taste, used chiefly in the manufacture of explosives and matches, as a textile mordant, and as an oxidizing and bleaching agent.
- sojourner truth — Sojourner [soh-jur-ner,, soh-jur-ner] /ˈsoʊ dʒɜr nər,, soʊˈdʒɜr nər/ (Show IPA), (Isabella Van Wagener) 1797?–1883, U.S. abolitionist, orator, and women's-rights advocate, born a slave.
- south australia — a state in S Australia. 380,070 sq. mi. (984,380 sq. km). Capital: Adelaide.
- south glamorgan — a county in SE Wales. 161 sq. mi. (416 sq. km).
- south yorkshire — a metropolitan county in N England. 603 sq. mi. (1561 sq. km).
- southeastwardly — toward the southeast
- southern blight — a disease of peanuts, tomatoes, and other plants, caused by a fungus, Sclerotium rolfsii, affecting the roots and resulting in rapid wilting.
- southern gothic — a literary genre depicting life in the southern US and featuring grotesque themes and imagery
- southern lights — aurora australis.
- southern paiute — See under Paiute (def 2).
- southwestwardly — toward the southwest