subtend

Undersea, submarine; underspan, subtend; underslinking, subterfuge.

In like manner the two pale are bracteoles which subtend the flower proper.

"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.

Angles are distinguished by the number of degrees they subtend, to 360°, or the whole circumference of a circle.

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.