SEMIの定義と意味 | Dictionary.com

SEMI Definition & Meaning | Dictionary.com Jump to: semi semi noun semitrailer . semi- semi- a combining form borrowed from Latin, meaning “half,” freely prefixed to English words of any origin, now sometimes with the senses “partially,” “incompletely,” “somewhat”. semi– semi– A prefix that means “half,” (as in semicircle, half a circle) or “partly, somewhat, less than fully,” (as in semiconscious, partly conscious). Synonyms semi 1 American [ sem -ee, sem -ahy] / ˈsɛm i, ˈsɛm aɪ / noun Informal. semitrailer . Often semifinal . semi- 2 American a combining form borrowed from Latin, meaning “half,” freely prefixed to English words of any origin, now sometimes with the senses “partially,” “incompletely,” “somewhat”. semiautomatic; semidetached; semimonthly; semisophisticated. semi- 1 British prefix half Compare demi- hemi- semicircle partially, partly, not completely, or almost semiprofessional semifinal occurring twice in a specified period of time semiannual semiweekly "Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 semi 2 British / ˈsɛmɪ / noun a semidetached house short for semifinal short for semitrailer "Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 semi– Scientific A prefix that means “half,” (as in semicircle, half a circle) or “partly, somewhat, less than fully,” (as in semiconscious, partly conscious). Usage What does semi - mean? Semi - is a combining form used like a prefix meaning “half.” In some instances, it is used figuratively to mean "partially," "incompletely," or "somewhat." It is often used in a variety of technical and everyday terms. Semi - comes from Latin sēmi -, meaning “half.” The Greek cognate of sēmi - is hēmi -, also meaning “half,” which is the source of English terms such as hemialgia and hemicardia . To learn more, check out our entries for both words. Commonly Confused See bi- 1 . Etymology Origin of semi 1 By shortening Origin of semi- 2 Middle English < Latin sēmi-; cognate with Old English sōm-, sām- half (modern dial. sam- ), Old High German sāmi-, Sanskrit sāmi-, Greek hēmi-; cf. sesqui- Vocabulary lists containing semi UCPS 6th Grade Roots List #4 Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide! UCPS 6th Grade Roots List #7 Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use! Example Sentences Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com. The winners will play Braga or Freiburg in Istanbul on 20 May - with Braga edging the other semi final 2-1 - for the trophy and a place in the Champions League. From BBC • Apr. 30, 2026 “While we have been wrong on calling an end to the semi run, we think the window for a meaningful downside reversal is close,” Jonathan Krinsky, chief market technician at BTIG, wrote in a note. From MarketWatch • Apr. 24, 2026 “I think why people have been gravitating towards semi cap and memory and some of these ‘picks and shovels’ is, they’re the beneficiaries of all that capex,” he said. From Barron's • Apr. 4, 2026 He said he has also purchased around 80 of Nikola’s semi trucks out of bankruptcy. From The Wall Street Journal • Mar. 18, 2026 Occasionally, she feels the rumble of ground and she’ll look over her shoulder as a semi passes her. From "A Heart in a Body in the World" by Deb Caletti Related Words car crate freighter jeep lorry pickup rig van wagon Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023 Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.