English Words Starting With O

• order of magnitude

  nounC1
  /ˌɔː.dər əv ˈmæɡ.nɪ.tʃuːd/A step or level in a logarithmic scale; a factor of ten. Used to indicate a very large (or small) difference, typically a tenfold increase or decrease.
• order of merit

  nounC1
  /ˈɔːdər əv ˈmerɪt/A hierarchical ranking of individuals, based on their merit, accomplishments, or standing, often formalized within an institution or system of honor.
• order of military merit

  nounC2
  /ˈɔːdər əv ˈmɪlɪtəri ˈmɛrɪt/A military award given for distinguished service or merit.
• order of the day

  nounC1
  /ˌɔːdər əv ðə ˈdeɪ/The prevailing trend, custom, or most important priority at a particular time.
• order of the garter

  nounLow (C2)
  /ˌɔːdə(r) əv ðə ˈɡɑːtə(r)/A prestigious British order of chivalry, the oldest and most senior such order in the United Kingdom, founded by King Edward III around 1348. Its members are personally selected by the sovereign.
• order of the thistle

  nounVery Low Frequency
  /ˌɔːdər əv ðə ˈθɪsl/The Most Ancient and Most Noble Order of the Thistle is Scotland's highest order of chivalry, awarded for outstanding public service and achievement.
• order port

  nounA1
  /ˈɔː.dər/An authoritative instruction or directive; a sequence or arrangement of things according to a particular system; a request to buy goods or services.
• ordered field

  nounC2
  /ˈɔːdəd fiːld/A mathematical structure consisting of a set with two operations (addition and multiplication) and an order relation, where the operations and order are compatible.
• ordered pair

  nounC2
  /ˈɔː.dəd peə(r)/In mathematics and logic, a pair of objects where the order of the objects is significant; the first and second elements must be distinguished.
• ordered set

  nounC2
  /ˌɔːdəd ˈset/A mathematical concept where elements are organized in a specific sequence, often with a defined binary relation.
• ordering

  nounHigh
  /ˈɔː.dər.ɪŋ/The action of arranging things in a logical or sequential way.
• orderly

  adjectiveadverbnounB2
  /ˈɔːdəli/arranged or organized in a neat, systematic way; without confusion or disturbance.
• orderly marketing agreement

  nounC2
  /ˈɔː.də.li ˈmɑː.kɪ.tɪŋ əˈɡriː.mənt/A formal arrangement between countries or companies to regulate trade in a specific commodity, typically to prevent market disruption by limiting imports or exports.
• orderly officer

  nounLow
  /ˈɔːdəli ˈɒfɪsə/A military officer assigned with daily duties and responsibilities for a specific period, acting as a point of contact and supervisor of routine matters.
• orderly room

  nounLow
  /ˈɔː.də.li ˌruːm/An office or administrative building within a military barracks, camp, or unit, used for official business, record-keeping, and the work of the unit's orderly sergeant or clerk.
• orders

  plural-nounA2-B1
  /ˈɔː.dəz/The noun form primarily refers to authoritative instructions or commands given by someone in a position of authority. The verb form means to give such instructions or to request something (like goods or services) from a provider.
• ordinal

  adjectivenounC1
  /ˈɔːdɪnəl/A number indicating position or order in a series (e.g., first, second, third).
• ordinal number

  nounB2
  /ˈɔː.dɪ.nəl ˈnʌm.bər/A number indicating position or order in a sequence (e.g., 1st, 2nd, 3rd).
• ordinal scale

  nounC1/C2
  /ˈɔː.dɪ.nəl skeɪl/A type of measurement scale in statistics and research where data is ranked or ordered, but the intervals between ranks are not equal or quantifiable.
• ordinance

  nounC1
  /ˈɔːdɪnəns/A formal authoritative order, decree, or law, typically one enacted by a local authority such as a city or town council.

Showing 1761–1780 of 3187 words.