| Root | Meaning in English | Origin language | Etymology (root origin) | English examples |
|---|---|---|---|---|
| zel- | zeal, jealousy | Greek | ζῆλος (zēlos) | jealousy, zeal, zealot |
| zo- | animal, living being | Greek | ζῷον (zōion) | azotemia, protozoa, zoanthropy, zodiac, zoic, zoo, zoology, zoomorphism, zoon, zooxanthella |
| zon- | belt, girdle | Greek | ζώνη (zōnē) | zonal, zone |
| zyg- | yoke | Greek | ζυγός (zugon) | heterozygous, zygote |
| zym- | ferment | Greek | ζύμη (zumē) | enzyme, lysozyme |
