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单词 subtend
释义

WordReference Random House Unabridged Dictionary of American English © 2024
sub•tend  (səb tend′, sub-),USA pronunciation v.t. 
  1. Mathematics[Geom.]to extend under or be opposite to:a chord subtending an arc.
  2. Botany(of a leaf, bract, etc.) to occur beneath or close to.
  3. to form or mark the outline or boundary of.
  • Latin subtendere to stretch beneath, equivalent. to sub- sub- + tendere to stretch; see tend1
  • 1560–70

Collins Concise English Dictionary © HarperCollins Publishers::
subtend /səbˈtɛnd/ vb (transitive)
  1. to be opposite to and delimit (an angle or side)
  2. (of a bract, stem, etc) to have (a bud or similar part) growing in its axil
Etymology: 16th Century: from Latin subtendere to extend beneath, from sub- + tendere to stretch out
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更新时间：2025/2/23 7:06:46