A great and meaningful relationship cannot be defined by words alone. It should be an act that describes the whole emotional factors of those who are in relationship. In the society we live in today, each relationship has their own ideals, which is why there is a unique definition that would be given to this particular question. For me, a great and meaningful relationship is sharing the same goals for the future, open communication, clear understanding of one another, traveling together, being happy and there should be respect and trust. Honesty should be practiced in order for trust and respect to be built. Taking consideration of your partner's situation or needs is one of the best thing that also makes a great and meaningful relationship.