subtend

Verb

be opposite to; of angles and sides, in geometry
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.
To extend or stretch opposite something; to be part of a straight or curved line that is opposite to and delimits an angle.
To form the central angle of a circle underneath an arc.
To stand beneath or close to, as a bract at the base of a flower.

Examples

"A 43° angle subtends an arc of about 0.75 meters on a circle with a radius of 1 meter."
"A hypotenuse subtends the right angle of a right triangle."
"An arc measuring about 0.75 meters on a circle with a radius of 1 meter subtends an angle of about 43°."
"The points A and B on the circumference form the arc AB, which subtends the central angle θ."

Origin / Etymology

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.

Synonyms

delimit

Scrabble Score: 10

subtend is a valid Scrabble (US) TWL word
subtend is a valid Scrabble Word in Merriam-Webster MW Dictionary
subtend is a valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 13

subtend is a valid Words With Friends word