- Geometry. to extend under or be opposite to: a chord subtending an arc.
- Botany. (of a leaf, bract, etc.) to occur beneath or close to.
- to form or mark the outline or boundary of.
Origin of subtend
Related Words for subtendtraverse, span, unite, join, bind, couple, reach, cross, attach, link, branch, subtend
Examples from the Web for subtend
Historical Examples of subtend
Undersea, submarine; underspan, subtend; underslinking, subterfuge.An Outline of English Speech-craft
In like manner the two pale are bracteoles which subtend the flower proper.Grasses
H. Marshall Ward
"Subtend" is from the Latin sub (under), and tendere (to stretch).
He did not define "subtend," supposing such words to be already understood.
The cones, about the size of a small walnut, bear spirally arranged imbricated scales which subtend the three-angled winged seeds.
- geometry to be opposite to and delimit (an angle or side)
- (of a bract, stem, etc) to have (a bud or similar part) growing in its axil
- to mark off
- to underlie; be inherent in