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English Words Starting With S
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- sinuosity/ˌsɪnjʊˈɒsɪti/The quality or state of being sinuous; having many curves or bends.nounLow (C1/C2)
- sinus/ˈsaɪ.nəs/a cavity, hollow space, or channel; in anatomy, a hollow space in bone or other tissuenounC1
- sinus iridum/ˌsaɪnəs ˈɪrɪdəm/The space between the iris and the cornea in the eye, where aqueous humor drains.nounVery Low / Technical
- sinus meridianii/ˌsaɪnəs məˌrɪdɪˈɑːnɪaɪ/A term from historical astronomy and navigation referring to the sine of the meridian altitude of a celestial body, used in calculating latitude or time.nounExtremely rare / Obsolete technical
- sinus node/ˈsaɪnəs nəʊd/The natural pacemaker of the heart; a small mass of specialized cells in the right atrium that initiates each heartbeat.nounLow
- sinus of valsalva/ˈsaɪnəs əv vælˈsælvə/A dilated pouch or outpouching at the base of the aorta, located immediately above the aortic valve, named after the Italian anatomist Antonio Maria Valsalva.nounVery Low (Specialized Technical)
- sinus sabaeus/ˈsaɪnəs səˈbiːəs/A large, dark albedo feature on the surface of the planet Mars, located in its southern hemisphere.nounVery Low
- sinusitis/ˌsʌɪnəˈsʌɪtɪs/Inflammation of the mucous membrane lining the sinuses, typically causing facial pain, headache, and nasal congestion.nounMedium
- sinusoid/ˈsaɪnəsɔɪd/a mathematical curve representing smooth, periodic oscillation resembling a sine wave.adjectivenounC2 / Very Low Frequency
- sinusoidal projection/ˌsʌɪnjʊˈsɔɪdl prəˈdʒɛkʃ(ə)n/A specific type of map projection that represents the Earth's surface.nounVery low
- sion/ˈvɪʒ.ən/The ability to see; something seen in the imagination, especially of future events or possibilities.nounB2
- siop/ʃɒp/A word of Welsh origin meaning a shop or small store.nounVery Low (Regional)
- siouan/ˈsuːən/A large family of Native American languages spoken by various peoples historically inhabiting the Great Plains and parts of the Midwest and Southeast of North America.adjectivenounLow
- sioux/suː/A member of a large group of Native American peoples historically inhabiting the Great Plains of North America.nounB2/C1
- sioux city/ˌsuː ˈsɪti/A city in the U.S. state of Iowa, named after the Sioux people.nounLow (Proper Noun). Common in U.S. geographical and regional contexts, but low in general international discourse.
- sioux falls/ˌsuː ˈfɔːlz/The largest city in South Dakota, USA, named after the Sioux tribe and waterfalls on the Big Sioux River.nounLow
- sioux state/suː steɪt/An official nickname for the U.S. state of South Dakota, referring to the Sioux Nation indigenous to the region.nounVery Low
- sioux war/suː wɔː/A specific series of armed conflicts between the United States and various bands of the Sioux people, primarily in the latter half of the 19th century, for control of the Northern Plains.nounLow
- sip/sɪp/To drink by taking very small mouthfuls.nounverbverb-intransitive+1Medium-high
- sipe/saɪp/A small groove or channel in a tire tread or footwear sole to improve grip, especially on wet or icy surfaces.verb-intransitiveLow
Showing 6681–6700 of 15552 words.