楕円(だえん)

だえん
noun
ellipse, oval
1. ellipse, oval
A geometric shape that is elongated like a circle stretched in one direction. In mathematics, a curve with two focal points.
地球(ちきゅう)の軌道(きどう)は楕円(だえん)形(けい)をしている。
Earth's orbit is elliptical in shape.
楕円(だえん)の面積(めんせき)を計算(けいさん)する。
Calculate the area of the ellipse.
楕円(だえん)形(けい)のテーブルを買(か)った。
I bought an oval table.
楕円形 = oval shape

Usage: 楕円(だえん) is used in:

  • Mathematics (geometry)
  • Astronomy (planetary orbits)
  • Everyday descriptions of oval shapes

Compounds

  • 楕円(だえん)形(けい) (elliptical shape, oval)
  • 楕円(だえん)軌道(きどう) (elliptical orbit)
  • 楕円(だえん)体(たい) (ellipsoid)

Mathematics

  • 楕円(だえん) has two focal points (焦点(しょうてん))
  • The sum of distances from any point on the ellipse to both focal points is constant

Similar words

  • 円(えん) = circle (perfect round shape)
  • 楕円(だえん) = ellipse (elongated circle)

Related Words

Related: 円(えん) (circle)
Related: 放物線(ほうぶつせん) (parabola)
general
Added 2026.1.13 20:35 · Revised 2026.9.2 12:02
04000/04052_daen