English Words Starting With E

• ellipsograph

  nounExtremely Rare
  /ɪˈlɪpsəʊɡrɑːf/A geometric instrument for drawing ellipses.
• ellipsoid

  adjectivenounC1/C2
  /ɪˈlɪpsɔɪd/A three-dimensional shape that is an ellipse in all planes through its center, like a stretched or squashed sphere.
• ellipsoid of revolution

  nounC2+ (Very Low Frequency)
  /ɪˈlɪpsɔɪd əv ˌrɛvəˈluːʃən/A three-dimensional geometric shape generated by rotating an ellipse around one of its principal axes.
• ellipsometer

  nounLow (Highly Specialised)
  /ɪˌlɪpˈsɒm.ɪ.tər/An optical instrument for measuring the thickness and optical properties of thin films.
• ellipt

  verb-transitiveVery Low / Archaic
  /ɪˈlɪpt/To omit or leave out words or parts of a sentence, making the expression more concise.
• elliptic function

  nounVery Low (C2)
  /ɪˌlɪp.tɪk ˈfʌŋk.ʃən/A complex function that is periodic in two directions and satisfies a certain differential equation, historically arising from the problem of computing the arc length of an ellipse.
• elliptic geometry

  nounRare
  /ɪˈlɪp.tɪk dʒiˈɒm.ə.tri/A non-Euclidean geometry in which, through a point not on a given line, there are no lines parallel to the given line.
• elliptic integral

  nounSpecialized (C2)
  /ɪˈlɪp.tɪk ˈɪn.tɪ.ɡrəl/An integral involving the square root of a cubic or quartic polynomial, central to calculating arc lengths of ellipses.
• elliptic paraboloid

  nounLow / Technical
  /ɪˌlɪp.tɪk pəˈræb.ə.lɔɪd/A three-dimensional quadratic surface where cross-sections parallel to one coordinate plane are ellipses, and cross-sections parallel to the other coordinate plane are parabolas. It has a bowl-like or satellite dish-like shape.
• elliptic spring

  nounC2 (Very low frequency, highly specialized)
  /ɪˈlɪp.tɪk sprɪŋ/A mechanical spring made from a single piece of steel formed into a flattened elliptical or oval shape, used primarily in vehicle suspension systems.
• elliptical

  adjectivenounC1
  /ɪˈlɪp.tɪ.kəl/Having a shape that is a regular oval, like a flattened circle.
• elliptical galaxy

  nounLow
  /ɪˌlɪp.tɪ.kəl ˈɡæl.ək.si/A type of galaxy with an ellipsoidal shape and smooth, featureless light distribution, containing mostly older stars and little interstellar matter.
• elliptical light

  nounLow-frequency technical term
  /ɪˌlɪp.tɪ.kəl ˈlaɪt/An elongated, oval-shaped light fixture, often designed for interior or architectural lighting, typically recessed or surface-mounted.
• elliptical polarization

  nounVery Low
  /ɪˌlɪp.tɪ.kəl ˌpəʊ.lə.raɪˈzeɪ.ʃən/A state of electromagnetic wave polarization where the electric field vector rotates and traces an ellipse as the wave propagates.
• elliptical trainer

  nounB2
  /ɪˈlɪp.tɪ.kəl ˈtreɪ.nə/A stationary exercise machine designed to simulate walking, running, or stair climbing with a smooth, low-impact elliptical motion of the feet.
• ellipticity

  nounLow
  /ɪlɪpˈtɪsɪti/, /ˌɛlɪpˈtɪsɪti/The quality or state of being an ellipse; a measure of how much an ellipse deviates from a perfect circle.
• elliptograph

  nounExtremely Rare / Obsolete Technical
  /ɪˈlɪp.tə.ɡrɑːf/A mechanical instrument for drawing ellipses, often used in drafting and design.
• ellis

  nounUncommon (as a common word), Common (as a proper noun)
  /ˈɛlɪs/Primarily a surname of Welsh origin, meaning 'benevolent' or 'kindly'. Also commonly used as a given name.
• ellis island

  nounLow (proper noun, specific historical/cultural reference)
  /ˌel.ɪs ˈaɪ.lənd/An island in New York Harbor that served as the main immigration processing station for the United States from 1892 to 1954.
• ellison

  nounVery Rare (In general usage; frequency is higher as a surname).
  /ˈɛlɪs(ə)n/A proper noun, primarily a surname, and an English possessive form denoting belonging to someone named Ellison.

Showing 1561–1580 of 4896 words.