e·co·tone 
(ēkə-tōn′, ĕkə-)
(ēkə-tōn′, ĕkə-)n.
A transitional zone between two communities containing species characteristic of each.
[ECO- + Greek tonos, tension, tone; see TONE.]
- demiurgeous
- demiurgic
- demiurgical
- demiurgically
- demiworld
- demo
- demo
- demob
- demobilization
- demobilize
- democracy
- democrat
- Democrat
- democratic
- democratically
- Democratic Party
- Democratic-Republican Party
- democratic socialism
- democratic socialist
- democratization
- democratize
- Democritus
- demodulate
- demodulation
- demodulator