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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)

sesquioxide
nounC2 (Proficiency)
/ˌsɛskwɪˈɒksʌɪd/A chemical oxide containing three atoms of oxygen combined with two atoms of another element.
sesquipedalian
adjectivenounC2
/ˌseskwɪpɪˈdeɪlɪən/characterized by long words; long-winded
sesquiplane
nounExtremely low / Historical technical term
/ˌsɛskwɪˈpleɪn/A type of biplane aircraft where one wing is significantly smaller than the other.
sesquiterpene
nounC2
/ˌsɛskwɪˈtɜːpiːn/A class of terpenes consisting of three isoprene units, having the molecular formula C15H24.
sesshu
nounVery Low
/ˈsɛʃuː/A Japanese term referring to a specific type of tax or tribute payment, historically used in feudal Japan.
sessile oak
nounC1-C2
/ˌses.aɪl ˈəʊk/A species of oak tree native to Europe and Western Asia, characterized by its leaves growing directly from the twig without a stalk.
session
nounC1 (Upper Intermediate - Advanced)
/ˈseʃ(ə)n/A period of time devoted to a particular activity, such as a meeting, class, discussion, or performance.
session musician
nounLow
/ˈseʃ(ə)n mjuːˈzɪʃ(ə)n/A professional musician hired to perform, often on a temporary or freelance basis, in recording studios or live performances, without being a permanent member of the band or ensemble.
sessional indemnity
nounVery low (Specialized/Technical)
/ˈseʃ(ə)nəl ɪnˈdɛmnɪti/Payment made to a member of a parliament or legislative body for the period during which that body is in session.
sessionman
nounC2
/ˈseʃ(ə)nˌman/A musician hired to play in a recording studio or for a specific performance, not a permanent member of a band.
sessions
nounB1
/ˈsɛʃ(ə)nz/Plural of 'session': a period of time devoted to a specific activity, such as a meeting, class, or official sitting of a court or parliament.
sesterce
nounC2 / Very Rare
/ˈsɛstəs/An ancient Roman coin and monetary unit, originally of silver and later of bronze, equal to a quarter of a denarius.
sestertium
nounVery Low / Obsolete
/sɛˈstɜː(r)ʃ(ɪ)əm/A unit of money in ancient Rome, specifically a large sum of 1000 sesterces.
sestertius
nounRare/Obsolete
/sɛˈstɜː(r)ʃəs/An ancient Roman silver coin, originally worth two and a half asses, later a bronze coin used through the Imperial period.
sestet
nounLow
/sɛsˈtɛt/A group of six lines of verse, especially the last six lines of a Petrarchan sonnet.
sestina
nounLow
/seˈstiːnə/A complex, fixed-form poem with six stanzas of six lines each, and a final three-line envoi.
sesto san giovanni
nounLow (Proper noun, specific geographic location)
/ˌsɛstəʊ ˌsæn dʒəʊˈvæni/A proper noun (toponym) referring to a specific city/town in the Lombardy region of Italy, located just north-east of Milan.
sestos
nounRare / Technical / Historical
/ˈsɛstɒs/A historical ancient Greek port city on the European side of the Hellespont (modern Dardanelles).
set
adjectiveinterjectionnoun+3A1
/sɛt/To put or place something in a specific position or condition.
set about
verbB1-B2
/ˌset əˈbaʊt/To begin doing something, especially with energy or determination.

Showing 4241–4260 of 15552 words.