ascenders

Then, with the help of handgrips called ascenders, he made his way along a series of guide ropes until he was hovering right over the skeleton.

The Goddess and the Bull MICHAEL BALTER 2005

+ Of vertical lines called ascenders when they extend above the line, and tails when they are prolonged below it;

The Catholic Encyclopedia, Volume 11: New Mexico-Philip 1840-1916 1913

It will be noticed in the diagram that the "ascenders" of the smaller letters rise about three squares to their extreme top points above the body of the letter; that the body of each letter is inclosed in a square that is three units high, and that the "descenders" fall but two squares below the letter body.

Letters and Lettering A Treatise With 200 Examples Frank Chouteau Brown

Newer models have heel-lifters, called "ascenders", that flip up to facilitate hill climbing.

CIVITATENSIS 2010

At the top of each pitch, he pulled up the slack in the rope, fixed it to the anchor and started climbing again, while I used mechanical ascenders to get to the station and put him on belay as fast as I could.

The Nose in a Day Michael J. Ybarra 2012

Jumaring, or climbing fixed lines with mechanical ascenders, is another Big Wall skill you need to master to efficiently aid climb—one I was still figuring out.

Training for the Big Wall Michael J. Ybarra 2011

Ted Mouths Off: NHL descenders and ascenders - USATODAY. com

Ted Mouths Off: NHL descenders and ascenders 2009

They have no sense of proportion; they think they're all ascenders and no descenders.

Making Light: The "agency model" as I understand it 2010

Xopher: they think they're all ascenders and no descenders.

Making Light: The "agency model" as I understand it 2010

This was real flying, better than airships or ascenders or hot-air balloons, like an eagle zooming down toward its prey.

LEVIATHAN MR. SCOTT WESTERFELD 2009