subtend

English

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subtend

  • /sʌbˈtɛnd/

Rhymes with -ɛnd

Where it comes from

From Latin subtendere, from sub (“under”) + tendere (“to stretch, extend”), itself a semantic loan from Ancient Greek ὑποτείνω (hupoteínō, “to subtend”), from which hypotenuse also derives. See tend.

verb subtends · subtending · subtended

  1. transitive To use an angle to delimit (mark off, enclose) part of a straight or curved line, for example an arc or the opposite side of a triangle. A 43° angle subtends an arc of about 0.75 meters on a circle with a radius of 1 meter.
  2. also, transitive To extend or stretch opposite something; to be part of a straight or curved line that is opposite to and delimits an angle. A hypotenuse subtends the right angle of a right triangle.
  3. transitive To form the central angle of a circle underneath an arc. The points A and B on the circumference form the arc AB, which subtends the central angle θ.
  4. transitive To stand beneath or close to, as a bract at the base of a flower.

Translations

Every language

verb to use an angle to delimit part of a straight or curved line

Русскийстя́гивать stjágivatʹ
Tiếng Việtchắn (cung)

verb to extend or stretch opposite something, often to delimit an angle

Françaissous-tendre
Deutschsich erstrecken gegenüber von, gegenüberliegen, abschneiden, begrenzen
Italianosottendere

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Cite this
MLA

"subtend." Wiktionary, via Micwyn, micwyn.com/word/subtend. Accessed 6 Nov. 2026.

APA

subtend. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/subtend

Chicago

"subtend." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/subtend.

BibTeX
@misc{subtend_2026,
  title = {subtend},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/subtend},
  urldate = {2026-11-06}
}