Eco
- A prefix derived from the word 'ecology' or 'ecosystem', used to denote something that is environmentally friendly or related to the environment. prefixThe company launched a new eco-friendly product line.Eco-tourism is becoming increasingly popular among travelers who are conscious of their environmental impact.
- A short form of the word 'ecology', referring to the branch of biology that deals with the relations of organisms to one another and to their physical surroundings. nounShe is studying eco to understand the impact of climate change on marine life.The eco of the rainforest is incredibly complex and diverse.