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Spheroid vs Hemispheroid - What's the difference?

spheroid | hemispheroid |

As nouns the difference between spheroid and hemispheroid

is that spheroid is a solid of revolution generated by rotating an ellipse about its major (prolate), or minor (oblate) axis while hemispheroid is a half of a spheroid.

As an adjective spheroid

is of a shape similar to a squashed sphere.

spheroid

English

(wikipedia spheroid)

Alternative forms

* (archaic)

Noun

(en noun)
  • A solid of revolution generated by rotating an ellipse about its major (prolate), or minor (oblate) axis.
    • UFOs are reported as being either oblate (saucer-shaped) or prolate (cigar-shaped) spheroids .

    Adjective

    (en adjective)
  • Of a shape similar to a squashed sphere.

    • hemispheroid

    English

    Noun

    (en noun)
  • A half of a spheroid.
    • (Webster 1913)