English Words Starting With O

• open educational resource

  nounC1
  /ˌəʊ.pən ˌed.jʊˈkeɪ.ʃən.əl rɪˈzɔːs/Any teaching, learning, or research material in the public domain or released under an open license that permits free use, reuse, adaptation, and sharing.
• open enrollment

  nounC1
  /ˌəʊ.pən ɪnˈrəʊl.mənt/A specific period during which individuals can enroll in or make changes to their selection of benefits, insurance plans, or educational courses, without needing to prove eligibility or meet special conditions.
• open field

  adjectivenounB1
  /ˌəʊpən ˈfiːld/A piece of land, usually agricultural, that is not enclosed by fences, walls, or trees; a wide, unobstructed area of countryside.
• open flash

  nounLow to Very Low (technical term)
  /ˌəʊpən ˈflæʃ/A technique in photography where a flash unit is fired while the camera's shutter is open, often used to create light trails or combine ambient light with a sharp flash exposure.
• open fracture

  nounC1
  /ˌəʊ.pən ˈfræk.tʃər/A bone break where the broken ends have pierced through the skin, creating an external wound.
• open frame

  nounLow
  /ˌəʊ.pən ˈfreɪm/In ten-pin bowling, a frame in which the player fails to knock down all ten pins with their two allotted rolls (i.e., neither a strike nor a spare is achieved).
• open game

  nounC1-C2
  /ˌəʊ.pən ˈɡeɪm/A situation or competition that is not controlled or dominated by any single participant, leaving opportunities for many.
• open house

  nounB1
  /ˌəʊpən ˈhaʊs/A period of time when a property (for sale or rent) is open for public viewing without appointment.
• open housing

  nounLow/Technical
  /ˌəʊ.pən ˈhaʊ.zɪŋ/The policy or practice of making housing available to all, regardless of race, ethnicity, religion, or other protected characteristics.
• open juncture

  nounVery Low
  /ˌəʊ.pən ˈdʒʌŋk.tʃə/A brief pause or transitional phonetic phenomenon between two syllables or words in connected speech, where the separation is audible but no silence is inserted.
• open learning

  nounC1
  /ˌəʊ.pən ˈlɜː.nɪŋ/A flexible educational approach where learners have control over the time, place, pace, and methods of their study, often using technology and self-directed resources.
• open letter

  nounC1
  /ˌəʊ.pən ˈlet.ər/A letter, often of criticism or appeal, addressed to a specific person or group but intended to be published for the general public to read.
• open loop

  nounLow
  /ˌəʊ.pən ˈluːp/A control system where the output has no influence on the input; there is no automatic feedback to adjust the operation.
• open market

  nounC1
  /ˌəʊpən ˈmɑːkɪt/A market system where goods, services, and securities are traded with minimal government restrictions, tariffs, or subsidies, allowing prices to be determined by supply and demand.
• open marriage

  nounC1/C2
  /ˌəʊ.pən ˈmær.ɪdʒ/A marital relationship in which both partners agree that each may engage in sexual relationships with other people, typically with consent and knowledge.
• open mic

  nounB2
  /ˌəʊ.pən ˈmaɪk/A live event where members of the public are invited to perform, usually for a short time, on stage without prior booking or audition.
• open mike

  nounLow-medium
  /ˌəʊ.pən ˈmaɪk/An event, usually at a comedy club or cafe, where members of the public can perform spontaneously without prior booking.
• open order

  nounC1
  /ˌəʊpən ˈɔːdə(r)/A trade order for a security or other asset that remains active until it is executed by the trader, reaches its expiry date, or is canceled.
• open plan

  adjectivenounB2
  /ˌəʊ.pən ˈplæn/An interior architectural design in which large rooms are not divided into separate, enclosed smaller rooms by permanent walls.
• open policy

  nounMedium
  /ˌəʊ.pən ˈpɒl.ə.si/An insurance policy that covers multiple shipments of goods over a period, without a predetermined total value.

Showing 1361–1380 of 3187 words.