English Words Starting With U

• univalve

  adjectivenounC1
  /ˈjuːnɪvælv/A mollusc whose shell consists of a single, typically coiled piece (e.g., a snail).
• universal

  adjectivenounC1
  /ˌjuː.nɪˈvɜː.səl/Relating to or affecting all people or things; applicable everywhere.
• universal affirmative

  nounC1/C2
  /ˌjuː.nɪˌvɜː.səl əˈfɜː.mə.tɪv/A proposition or statement in logic which asserts that a certain property holds for all members of a given class (e.g., 'All S are P').
• universal beam

  nounLow
  /ˌjuː.nɪˈvɜː.səl biːm/A standardized steel beam with an I-shaped cross-section, used as a primary structural element in construction.
• universal chuck

  nounC2 / Low Frequency / Technical
  /ˌjuː.nɪˈvɜː.səl ʧʌk/A type of drill chuck used in machine tools that can hold a wide variety of cutting tools with different shank sizes without requiring special collets or adapters.
• universal city

  nounC2
  /ˌjuː.nɪˈvɜː.səl ˈsɪt.i/A city designed or conceived to represent or serve all of humanity, often with utopian ideals or in reference to global culture, or a specific city intended as a global center.
• universal class

  nounC2
  /ˌjuː.nɪˈvɜː.səl ˈklɑːs/In set theory and logic, a class containing absolutely all sets, objects, or entities under consideration, often leading to paradoxes.
• universal donor

  nounB2
  /ˌjuː.nɪˈvɜː.səl ˈdəʊ.nə(r)/a person with type O negative blood, whose blood can be transfused to patients of any blood type in an emergency without immediate serious reaction
• universal gas constant

  nounC1
  /ˌjuː.nɪˌvɜː.səl ˈɡæs ˌkɒn.stənt/The physical constant (denoted R) that relates the energy scale in physics to the temperature scale and the amount of substance.
• universal grammar

  nounC2
  /ˌjuːnɪˌvɜːs(ə)l ˈɡræmə(r)/The theoretical set of innate principles and properties common to all human languages, enabling children to acquire language naturally.
• universal joint

  nounLow-Frequency Technical Term
  /ˌjuːnɪˈvɜːs(ə)l dʒɔɪnt/A mechanical coupling device that allows connected shafts to rotate at various angles relative to each other while transmitting rotary motion.
• universal language

  nounC1
  /ˌjuː.nɪˈvɜː.səl ˈlæŋ.ɡwɪdʒ/A language or system of communication that is understood and used by everyone, everywhere.
• universal life insurance

  nounLow-frequency domain term
  /ˌjuː.nɪˈvɜː.səl ˈlaɪf ɪnˈʃɔː.rəns/A type of permanent life insurance that combines a death benefit with a cash value savings component, offering flexible premiums and an adjustable death benefit.
• universal military training

  nounC2
  /ˌjuː.nɪˈvɜː.səl ˈmɪl.ɪ.tri ˈtreɪ.nɪŋ/A system or policy requiring all eligible citizens, typically of a certain age range, to undergo basic military instruction and preparation, often as a peacetime measure for national readiness.
• universal mill

  nounVery Low
  /ˌjuː.nɪˈvɜː.səl ˈmɪl/A rolling mill with rolls that are adjustable and can be moved both horizontally and vertically, allowing it to roll a wide variety of metal shapes and profiles.
• universal motor

  nounC2
  /ˌjuː.nɪˈvɜː.səl ˈməʊ.tər/A type of electric motor that can operate on both alternating current (AC) and direct current (DC).
• universal negative

  nounC2
  /ˌjuː.nɪˈvɜː.səl ˈneɡ.ə.tɪv/A proposition or statement that denies something about every member of a category (e.g., 'No dogs are reptiles').
• universal postal union

  nounLow
  /ˌjuː.nɪˌvɜː.səl ˈpəʊ.stəl ˈjuː.njən/A specialized agency of the United Nations that coordinates international postal policies and services among member countries.
• universal product code

  nounC1
  /ˌjuːnɪˌvɜːs(ə)l ˈprɒdʌkt ˌkəʊd/The standardized barcode printed on retail product packaging to uniquely identify an item for scanning at point of sale.
• universal quantifier

  nounC2
  /ˌjuː.nɪˌvɜː.səl ˈkwɒn.tɪ.faɪ.ə/A logical symbol meaning 'for all' or 'for every', expressing that a predicate holds for all members of a domain.

Showing 761–780 of 1514 words.