English Words Starting With O

• origen

  nounB2
  /ˈɒr.ɪ.dʒɪn/The point or place where something begins or is created.
• origin

  nounHigh
  /ˈɒr.ɪ.dʒɪn/The point or place where something begins, arises, or is derived; the beginning or source.
• origin of species, the

  nounLow
  /ðiː ˈɒr.ɪ.dʒɪn əv ˈspiː.ʃiːz/The seminal 1859 book by Charles Darwin, formally titled 'On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life'. It introduced the scientific theory of evolution by natural selection.
• origin story

  nounB2
  /ˈɒr.ɪ.dʒɪn ˌstɔː.ri/A narrative that explains how a character, institution, concept, or object came into existence and acquired its fundamental characteristics.
• original

  adjectivenounB1
  /əˈrɪdʒənəl/Existing from the beginning; the first or earliest instance of something; not a copy or imitation.
• original equipment manufacturer

  nounLow-Mid
  /əˌrɪdʒ.ən.əl ɪˈkwɪp.mənt ˌmæn.jʊˈfæk.tʃər.ər/A company that produces components or products that are used in another company's end product, often sold under the brand of the purchasing company rather than the manufacturer.
• original sin

  nounC2
  /əˌrɪdʒənl ˈsɪn/In Christian theology, the innate state of sinfulness inherited by all human beings as a consequence of Adam and Eve's first disobedience to God in the Garden of Eden.
• originalism

  nounC2
  /əˈrɪdʒ.ɪ.nəl.ɪ.zəm/A legal philosophy or theory that interprets a document, especially a constitution, based on the original meaning intended by its authors at the time of its creation.
• originality

  nounC1
  /əˌrɪdʒəˈnæləti/The quality of being new, fresh, and inventive; not derived from something else.
• originate

  verbverb-intransitiveverb-transitiveC1
  /əˈrɪdʒ.ɪ.neɪt/To have a specific beginning; to start or come into existence.
• origination fee

  nounB2
  /əˌrɪdʒɪˈneɪʃən fiː/A one-time fee charged by a lender to process a new loan application.
• orihon

  nounVery low
  /ˈɒrɪhɒn/A type of traditional book from East Asia, constructed as a long strip of paper that is folded back and forth in an accordion style, without separate pages or binding.
• orihou

  nounVery Low
  /ˈɒrɪˌhuː/A term of Polynesian origin, likely referring to a location, geographical feature, or cultural concept.
• orillia

  nounVery Low (Proper Noun/Place Name)
  /əˈrɪlɪə/A proper noun, primarily referring to a city in Ontario, Canada, situated on Lake Simcoe.
• orinasal

  adjectivenounVery Rare
  /ˌɔːrɪˈneɪzəl/Relating to or produced by both the mouth and the nose; a speech sound articulated with both oral and nasal resonance.
• orinda

  nounVery Low
  /ɒˈrɪndə/A proper noun, historically a female given name, now extremely rare and primarily known as a literary pseudonym.
• orinoco

  nounLow
  /ˌɒrɪˈnəʊkəʊ/A major river in South America, flowing through Venezuela and Colombia into the Atlantic Ocean.
• oriole

  nounLow
  /ˈɔː.ri.əʊl/A brightly colored songbird, typically with black and yellow or orange plumage.
• orion

  nounLow-Frequency Proper Noun
  /əˈraɪ.ən/A prominent constellation, named after a hunter in Greek mythology, containing many bright stars including Betelgeuse and Rigel.
• orion nebula

  nounC1
  /əˌraɪ.ən ˈnebjələ/A prominent, luminous interstellar cloud of gas and dust located in the constellation Orion.

Showing 1941–1960 of 3187 words.