Extended; distended; taut.

That stretches, in the senses of the verb. stretching gallop, a gallop in which the legs of the horse are fully extended.

Stretched out at full length or breadth; extended. Obsolete.

Of material, a line, etc.: Extended, spread out, drawn out so as to be tight. Hence figurative of a receptacle: Strained in capacity, filled to the…

Extended.

that extends; that is expanding, spreading out, or becoming larger.

That reaches outwards (literal and figurative).