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English Words Starting With S

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

sulfate process
nounLow
/ˈsʌl.feɪt ˌprəʊ.ses/An industrial chemical method, primarily used to produce wood pulp for paper, where wood chips are cooked in a solution containing sodium sulfate to separate cellulose from lignin.
sulfate pulp
nounC1/C2
/ˈsʌlfeɪt pʌlp/Wood pulp produced by cooking wood chips under pressure in a solution of sodium hydroxide and sodium sulfide, a primary method in papermaking.
sulfathiazole
nounVery low (C2+ specialist term)
/ˌsʌlfəˈθaɪəzəʊl/A synthetic antibacterial drug derived from sulfonamide, historically used to treat bacterial infections.
sulfatize
verb-transitiveVery Rare
/ˈsʌl.fə.taɪz/To convert into or treat with a sulphate.
sulfide
nounC1
/ˈsʌlfaɪd/A chemical compound of sulfur with another element or group, typically a metal (e.g., iron sulfide, hydrogen sulfide).
sulfinpyrazone
nounVery Low
/ˌsʌlfɪnˈpɪrəzəʊn/A uricosuric and platelet-aggregation inhibiting drug.
sulfinyl group
nounC2
/ˈsʌlfɪnɪl ɡruːp/A specific functional group in organic chemistry with the structure R-S(O)-R', where a sulfur atom is bonded to two organic radicals and one oxygen atom via a double bond.
sulfisoxazole
nounspecialized
/ˌsʌlfɪˈsɒksəzəʊl/A sulfonamide antibiotic used to treat bacterial infections.
sulfite
nounLow (in general English); Medium-High (in food science, winemaking, allergy contexts)
/ˈsʌl.faɪt/A chemical compound containing the sulfite ion (SO₃²⁻), often used as a preservative in food and wine to prevent oxidation and bacterial growth.
sulfite paper
nounLow
/ˈsʌlfaɪt ˈpeɪpə/A type of paper manufactured using sulfite pulp, which involves digesting wood chips in a sulfite solution to break down lignin and retain cellulose fibres. This process yields a high-quality, relatively white paper often used for archival purposes.
sulfite process
nounVery Low
/ˈsʌlfaɪt ˌprəʊses/A chemical pulping method that uses sulfite salts to dissolve lignin and separate cellulose fibers from wood.
sulfite pulp
nounTechnical
/ˈsʌlfaɪt pʌlp/A type of chemical pulp produced by treating wood chips with sulfite salts, used in papermaking.
sulfiting agent
nounC1
/ˈsʌl.faɪ.tɪŋ ˌeɪ.dʒənt/A chemical compound that releases sulfur dioxide, used to prevent oxidation and bacterial growth in food and beverages.
sulfo group
nounVery Low
/ˈsʌlfəʊ ˌɡruːp/A functional group in chemistry consisting of a sulfur atom bonded to three oxygen atoms (one double bond, two single bonds) and one other atom (usually carbon or hydrogen), with the formula -SO₂H or -SO₂OH.
sulfocarbanilide
nounVery Rare
/ˌsʌlfəʊˌkɑːˈbænɪlaɪd/A specific chemical compound used as an insecticide and acaricide.
sulfonamide
nounC2
/ˌsʌlˈfɒn.ə.maɪd/A class of synthetic drugs derived from sulfanilamide, used as antibacterial agents to treat infections.
sulfonate
nounverb-transitiveC1/C2 (Specialized)
/ˈsʌlfəneɪt/A salt or ester of a sulfonic acid (chemical compound).
sulfonation
nounVery Low
/ˌsʌlfəˈneɪʃən/The chemical process of introducing a sulfonic acid group (-SO₃H) into an organic molecule.
sulfone
nounC2
/ˈsʌlfəʊn/A class of organic chemical compounds characterized by a sulfur atom double-bonded to two oxygen atoms and single-bonded to two carbon-containing groups.
sulfonic acid
nounVery Low
/ˌsʌlˈfɒnɪk ˈæsɪd/A strong organic acid containing the functional group –SO₃H, directly attached to a carbon atom.

Showing 13881–13900 of 15552 words.