Douglas Harper's Etymology Dictionary
Wiktionary
chiral
a. Of an object that exhibits chirality, as in the left-handed and right-handed versions of a helix.
Wikipedia
Usage examples of "chiral".
The point was to establish whether a chiral asymmetry existed in samples from the primordial nebular material, and, if so, whether it had been modified in the subsequent five billion years of solar system evolution.
If they found conclusive evidence that chiral asymmetry predated life on Earth, it would be a landmark achievement in exobiology, since so far the chiral nature of organic compounds on Earth was a sure signature of life.