Subtend is a 7 letter English word. It's valid Scrabble word worth 10 points. It's valid Words with friends word worth 13 points.
You can make 194 anagrams from letters in subtend (bdenstu).
1560-70; Latin subtendere to stretch beneath, equivalent to sub- sub- + tendere to stretch; see tend1
The cones, about the size of a small walnut, bear spirally arranged imbricated scales which subtend the three-angled winged seeds.
He did not define "subtend," supposing such words to be already understood.
For this purpose the condenser should subtend as large an angle as possible at the source of light.
Unless they subtend a high vertical angle to the vision they produce little effect.
Undersea, submarine; underspan, subtend; underslinking, subterfuge.
Angles are distinguished by the number of degrees they subtend, to 360°, or the whole circumference of a circle.
"subtend" is from the Latin sub (under), and tendere (to stretch).
In like manner the two pale are bracteoles which subtend the flower proper.