from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Developing from more than a single type of tissue.
- adj. Growing several forms or type of leaves along a shoot depending on age or shoot length.
from The Century Dictionary and Cyclopedia
- Having a different histological origin, as when cartilage arises from periosteal cells: opposed to homoblastic.
Sorry, no etymologies found.
Also abundant are species with heteroblastic growth and small limited-growth branches covered with tight leaves.