thousandth

The light, about one thousandth of the amount needed to read by, is just a start.

You could actually draw out a 36,000-kilometer strand or ribbon of nanotubes stronger than steel, but maybe a thousandth the thickness of a human hair.

Amid the current concerns about the federal deficit, reaching toward the stars seems a dispensable luxury—as if saving one-thousandth of a single year's budget would solve our problems.

He celebrated his thousandth day.

As if that were not enough of an impact, sunscreens increasingly contain nanoparticles, smaller than one one-thousandth the diameter of a human hair.

A micrometer is one thousandth of one millimeter.

These high-energy gamma rays, detected by Fermi’s Large Area Telescope , have wavelengths one-thousandth the size of an atomic nucleus.