subtend

动词 v.
中文释义

英文释义

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

词形变化

subtends present,singular,third-person subtending participle,present subtended participle,past subtended past

词汇关系

衍生词
subtendent

词源

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.
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