* Καινοτομία (kainotomía): This is the most common and direct translation, often used in modern Greek. It literally means "newness" or "novelty" and effectively captures the sense of introducing something new.
* Εφεύρεση (efevrési): This translates to "invention." While not identical to innovation, invention is a key component of innovation, and this word might be suitable in contexts where the focus is on the creation of a new thing.
* Πρωτοπορία (protoporía): This means "pioneering" or "being at the forefront." It emphasizes the leading-edge aspect of innovation.
The best choice will depend on the specific context. If you need a single word, καινοτομία (kainotomía) is the safest bet.