English Words Starting With E

• eiffel tower

  nounMedium-High
  /ˌaɪfəl ˈtaʊə(r)/A wrought-iron lattice tower on the Champ de Mars in Paris, France, named after its engineer Gustave Eiffel, built for the 1889 World's Fair.
• eigen

  nounVery Low
  /ˈaɪɡən/A term from mathematics, especially linear algebra, meaning a property or value that is intrinsic, characteristic, or invariant under a given transformation, often specifically referring to eigenvalues or eigenvectors.
• eigenfrequency

  nounC2
  /ˈaɪɡənˌfriːkwənsi/A characteristic frequency at which a system naturally vibrates or oscillates when disturbed.
• eigenfunction

  nounC2
  /ˈaɪɡənˌfʌŋkʃən/In mathematics and physics, a non-zero function that, when a given linear operator is applied to it, yields a scalar multiple of itself. The scalar is called the eigenvalue.
• eigentone

  nounC2
  /ˈaɪɡənˌtəʊn/A natural resonance frequency of an object or system, at which it vibrates most strongly when disturbed.
• eigenvalue

  nounC2
  /ˈaɪɡənˌvæljuː/In linear algebra, a scalar associated with a linear transformation of a vector space that, when multiplied by a non-zero eigenvector, yields that same eigenvector.
• eigenvector

  nounC1/C2 (Specialized/Technical)
  /ˈaɪɡənˌvɛktə/A nonzero vector that, when a linear transformation is applied to it, changes only by a scalar factor; a vector whose direction remains unchanged when multiplied by a given matrix.
• eiger

  nounLow (Proper Noun)
  /ˈaɪɡə/A prominent mountain peak in the Bernese Alps, Switzerland.
• eight

  adjectivedeterminernounA1
  /eɪt/The cardinal number equivalent to the sum of seven and one; the digit/figure 8.
• eight ball

  nounB2-C1
  /ˈeɪt ˌbɔːl/In the game of pool, the black ball marked with the number 8, which must be pocketed last to win the standard game of "eight-ball".
• eight-spot

  nounLow
  /ˈeɪt ˌspɒt/A playing card, domino, or die marked with eight pips or spots.
• eight-track tape

  nounLow
  /ˌeɪt træk ˈteɪp/A magnetic tape sound recording technology popular from the mid-1960s to early 1980s, using a cartridge containing an endless loop of tape divided into eight parallel tracks.
• eightball

  nounMedium-Low
  /ˈeɪtbɔːl/A black pool ball numbered eight, which players aim to pocket last to win the game.
• eighteen

  adjectivedeterminernounA1
  /ˌeɪˈtiːn/The cardinal number 18, equivalent to the sum of seventeen and one.
• eighteen-wheeler

  nounMedium (C1)
  /ˌeɪtiːn ˈwiːlə/A very large truck used for transporting freight over long distances, typically having a total of eighteen wheels.
• eighteenmo

  nounRare
  /ˌeɪtˈiːnməʊ/A book size designation indicating that each leaf is 1/18th of a standard printer's sheet.
• eighteenth

  adjectivenounB1
  /ˌeɪˈtiːnθ/The ordinal number corresponding to the cardinal number 18; coming next after the seventeenth in position.
• eighteenth amendment

  nounLow/Medium
  /ˌeɪˈtiːnθ əˈmendmənt/A specific amendment to the United States Constitution that prohibited the manufacture, sale, and transportation of alcoholic beverages.
• eightfold path

  nounlow
  /ˈeɪtfəʊld ˈpɑːθ/The fundamental Buddhist teaching outlining the practical steps to end suffering and achieve enlightenment.
• eightfold way

  nounC2
  /ˌeɪt.fəʊld ˈweɪ/A framework in theoretical physics that classifies subatomic particles, specifically hadrons, into groups based on symmetry.

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