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English Words Starting With S

15,552 entries — pick a word to see its definition, pronunciation, and usage.

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Noun Verb Adjective Adverb Plural noun Combining form Verb (transitive)Verb (intransitive)Verb (ambitransitive)

sulawesi
nounLow
/ˌsuː.ləˈweɪ.si/A large island in Indonesia, located east of Borneo.
sulcus
nounTechnical
/ˈsʌlkəs/A groove or furrow, especially one on the surface of the brain or another organ.
suleiman i
nounLow
/ˌsuːleɪˈmɑːn ðə fɜːst/Proper noun referring to the tenth and longest-reigning sultan of the Ottoman Empire (1520–1566), known as 'Suleiman the Magnificent' in the West and 'Suleiman the Lawgiver' in the Ottoman Empire.
sulfa
adjectivenounlow
/ˈsʌlfə/A type of antibiotic drug derived from sulfanilamide, used to treat bacterial infections.
sulfa drug
nounLow
/ˈsʌlfə drʌɡ/A synthetic antibacterial drug derived from sulfanilamide, used to treat bacterial infections.
sulfadiazine
nounC2
/ˌsʌlfəˈdaɪəziːn/A synthetic sulfonamide antibiotic used to treat various bacterial infections, particularly in combination with other drugs.
sulfadimidine
nounVery Low
/ˌsʌl.fəˈdaɪ.mɪ.diːn/A synthetic antibiotic drug of the sulfonamide class, used primarily in veterinary medicine to treat bacterial infections.
sulfamethazine
nounSpecialized
/ˌsʌlfəˈmɛθəziːn/A sulfonamide antibiotic used to treat bacterial infections.
sulfamethoxazole
nounLow/Very Low
/ˌsʌlfəmɛθˈɒksəzəʊl/A synthetic antibiotic belonging to the sulfonamide class, used primarily to treat or prevent bacterial infections.
sulfanilamide
nounC1-C2
/ˌsʌlfəˈnɪləmʌɪd/A synthetic organic compound with antibacterial properties, historically one of the first sulfonamide drugs.
sulfanilic acid
nounVery Low
/ˌsʌlfəˈnɪlɪk ˈæsɪd/A white crystalline organic acid used as a chemical intermediate in dye production and analytical chemistry.
sulfanilyl group
nounC2/Highly Technical
/ˌsʌlfəˈnɪlɪl ɡruːp/The chemical functional group –SO₂–C₆H₄–NH₂, derived from sulfanilic acid; a key component in sulfonamide antibiotics.
sulfantimonide
nounVery Rare/Very Low
/ˌsʌlfænˈtɪmənaɪd/A chemical compound containing sulfur and antimony as the main electronegative elements.
sulfapyridine
nounLow
/ˌsʌlfəˈpɪrɪdiːn/A sulfonamide antibiotic used to treat bacterial infections.
sulfarsenide
nounLow/Very Rare
/sʌlˈfɑː.sə.naɪd/A binary compound consisting of sulfur and arsenic.
sulfarsphenamine
nounExtremely Rare
/ˌsʌlfɑːsˈfɛnəmiːn/A synthetic arsenic-containing organic compound, specifically an organoarsenic drug historically used as an antimicrobial agent.
sulfasalazine
nounVery Low
/ˌsʌl.fəˈsæl.ə.ziːn/A medication used to treat inflammatory bowel diseases such as ulcerative colitis and Crohn's disease.
sulfatase
nounVery Low
/ˈsʌl.fə.teɪz/An enzyme that catalyzes the hydrolysis of sulfate esters.
sulfate
nounverb-intransitiveverb-transitiveC1
/ˈsʌl.feɪt/A chemical compound or salt containing the sulfate ion (SO₄²⁻), often formed from sulfuric acid.
sulfate paper
nounRare
/ˈsʌlfeɪt ˈpeɪpə/A type of heavy, strong paper made from wood pulp treated with sulfate chemicals (kraft process), characterized by its brown colour and durability.

Showing 13861–13880 of 15552 words.