jiǎo​zhì

cutin

角质 (角質) jiǎo​zhì
cutin noun
a waxy, water-repellent substance that forms the cuticle of plant leaves and stems

The cuticle on the surface of plant leaves can reduce water evaporation.

keratin noun
a tough, fibrous structural protein found in the hair, nails, and skin of animals and humans

Keratin is the main component of nails and hair.

Frequency

Movie subtitles
0.390 per million appears in 0% of films
Written text
3.70 per million

Sources

Definitions
CC-CEDICT