There was no motion perceptible in the shrunken body on the bed.

She shrugged, a barely perceptible motion in the growing darkness.

Planets, however, will have perceptible proper motions and therefore show up as tiny streaks on the film.

The only perceptible motion was the exhaust from the attitude jets as they continued to fire to slow the ship's rotation.

He paused, letting that sink in, waiting until she nodded, a barely perceptible motion of her head.

He made the barest perceptible motion of his head.

For the first time, perceptible motion occurred at the trapdoor.

Moments ago the defensive satellites and enemy ships were stars in barely perceptible motion.

She leaned forward in a barely perceptible motion, little more than an inclining of her dark head.

"If you can evoke just the slightest perceptible motion in the shaker, we'll know you've got the power."