subtend C2 Topic:Mathematics & Measurement US /səbˈtɛnd/ UK /səbˈtend/ See IPA manual Meanings 1 verb to lie opposite an angle, or to have an angle formed at a point by lines drawn to the ends of an arc, line, or object The diameter subtends a right angle at every point on the semicircle. 2 verb to extend beneath or opposite something so as to mark off its limits From the observer's position, the two stars subtend only a tiny angle. Thesaurus Synonyms 1 verb · to lie opposite an angle,... interceptlie opposite 2 verb · to extend beneath or... delimitspan Word family Forms subtending Derived forms subtendedsubtending Related forms anglearchypotenuse Etymology From Latin subtendere ("to stretch beneath"), from sub- ("under") + tendere ("to stretch"). The geometrical sense parallels Ancient Greek hypoteinein, the source behind hypotenuse. Topics Mathematics & Measurement External links Cambridge Dictionary Wiktionary Google Images # subtend **Type:** Word **Level:** C2 **Part of speech:** verb **IPA (US):** /səbˈtɛnd/ **IPA (UK):** /səbˈtend/ ## Meanings 1. to lie opposite an angle, or to have an angle formed at a point by lines drawn to the ends of an arc, line, or object 2. to extend beneath or opposite something so as to mark off its limits ## Examples - The diameter subtends a right angle at every point on the semicircle. - From the observer's position, the two stars subtend only a tiny angle. ## Synonyms - intercept - delimit - span ## Derived Forms - subtended - subtending ## Related Forms - angle - arc - hypotenuse ## Etymology From Latin subtendere ("to stretch beneath"), from sub- ("under") + tendere ("to stretch"). The geometrical sense parallels Ancient Greek hypoteinein, the source behind hypotenuse. ## Topics - Mathematics & Measurement markdown