Word.ws English Dictionary

semiangle

semiangle noun: an angle of half a given size.

Noun

semiangle (plural semiangles)

  1. an angle of half a given size
  2. The angle formed between the axis of a cone and a line drawn from the apex of the cone to the edge of its base.
    • The results show that the optimum cone semiangle decreases slightly when the Mach number increases and, in the range of Mach numbers considered, is in the range of 22° to 25° for supersonic entrance flow.1954, United States. National Advisory Committee for Aeronautics, Report, page 25
    • The author's theory is almost perfect for 5° semiangle, is good for M_∞ ≤ 2 with 10° semiangle, and is beginning to be a serious overestimate for 15° semiangle.1954, M. J. Lighthill, Higher Approximations in Aerodynamic Theory, page 131

Forms of semiangle

pluralsemiangles

Origin of semiangle

From semi- + angle.

Questions about semiangle

What does semiangle mean?
Semiangle means an angle of half a given size.
What part of speech is semiangle?
Semiangle is a noun.
What is the plural of semiangle?
The plural of semiangle is semiangles.

Words near semiangle in the dictionary

  1. semianarchist
  2. semianatomical
  3. semianatropal
  4. semianatropous
  5. semianechoic
  6. semiangle
  7. semiangles
  8. semiangry
  9. semianimal
  10. semianimate
  11. semiannual

Source and license

Adapted from Wiktionary: semiangle (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-semiangle.wav.

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