English Words Starting With O

• oligospermia

  nounVery Low (Technical)
  /ˌɒlɪɡəʊˈspɜːmɪə/A medical condition in which a man's semen has a low concentration of sperm.
• oligotrophy

  nounC2
  /ˌɒlɪˈɡɒtrəfi/A state of being nutrient-poor, especially regarding an aquatic environment or soil.
• oliguria

  nounC2
  /ˌɒlɪˈɡjʊərɪə/A medical condition characterized by the production of abnormally small volumes of urine.
• olimbos

  nounObsolete
  Not applicablea rare and obsolete word referring to the wild olive tree.
• olimpico

  nounC1
  /əˈlɪm.pɪ.kəʊ/Related to the Olympic Games, the international multi-sport event held every four years, or to Mount Olympus in Greece.
• olin

  nounVery low
  /ˈəʊ.lɪn/A rare proper noun, typically used as a surname or place name, with Scandinavian origins.
• olinda

  nounRare
  /əʊˈlɪn.də/A place name, most notably a city in Brazil, or a less common female given name.
• olingo

  nounExtremely Rare / Marginal
  /əˈlɪŋ.ɡəʊ/A rare, colloquial, and often humorous term referring to a minor, inconsequential, or silly thing, event, or person. It can express mild mockery or affectionate dismissal.
• olinguito

  nounVery Low
  /ˌɒlɪŋˈɡiːtəʊ/A small, arboreal mammal of the raccoon family, native to the cloud forests of the Andes, newly described to science in 2013.
• olio

  nounLow (C2)
  /ˈəʊlɪəʊ/A miscellaneous collection of things; a mixture or medley.
• oliphant

  nounExtremely low / Archaic
  /ˈɒlɪf(ə)nt/An archaic or literary term for an elephant, often used in historical or fantasy contexts.
• olivares

  nounVery Low
  /ˌɒlɪˈvɑːreɪz/A Spanish surname of toponymic origin, derived from places named with the Spanish word 'olivar' meaning 'olive grove'.
• olivary body

  nounVery low
  /ˈɒl.ɪ.və.ri ˈbɒd.i/Either of a pair of prominent, oval-shaped structures in the medulla oblongata of the brainstem, involved in auditory and motor signal processing.
• olive

  adjectivenounB1
  /ˈɒl.ɪv/A small oval fruit with a hard stone, typically green when unripe and blackish purple when ripe, or the evergreen tree that produces it.
• olive branch

  nounC1
  /ˌɒl.ɪv ˈbrɑːntʃ/A literal branch of an olive tree, especially one cut to be carried as a symbol of peace.
• olive brown

  nounLow-Medium
  /ˌɒlɪv ˈbraʊn/A colour that is a muted, greenish-brown or greyish-brown, resembling a ripe olive.
• olive crown

  nounC2
  /ˌɒl.ɪv ˈkraʊn/A wreath of olive leaves worn as a symbol of victory, honor, or peace.
• olive drab

  nounC2
  /ˌɒl.ɪv ˈdræb/A dull, greyish-green colour, particularly associated with military uniforms and equipment.
• olive family

  nounC2 / Very Low Frequency
  /ˈɒl.ɪv ˌfæm.əl.i/The plant family Oleaceae, which includes olive trees, ash trees, lilacs, jasmines, and other related species.
• olive green

  nounMedium
  /ˌɒlɪv ˈɡriːn/A yellowish-green color resembling that of unripe olives

Showing 1001–1020 of 3187 words.