e·co·sys·tem 
(ēkō-sĭs′təm, ĕkō-)
(ēkō-sĭs′təm, ĕkō-)n.
An ecological community together with its environment, functioning as a unit.
- multiplication
- multiplicational
- multiplication sign
- multiplication table
- multiplicative
- multiplicative inverse
- multiplicatively
- multiplicitous
- multiplicity
- multiplier
- multiply
- multiply
- multipolar
- multipolarity
- multipotency
- multipotent
- multiprocessing
- multipronged
- multipurpose
- multiracial
- multiracialism
- multiregional
- multisense
- multisensory
- multiservice