Altruistic (adjective)

1. Unselfishly concerned for the welfare of others; selfless.
2. Denoting behaviour that is beneficial to others, especially with regard to evolution.

Origin:

Late 19th century: from french altruiste, from latin alter "other" + french -iste.

Examples:

1. He was known for his altruistic nature and always went out of his way to help others.
2. The organization's mission is to promote altruistic values and practices in society.
3. Her actions were purely altruistic, she didn't expect anything in return.
4. The volunteer work he did was motivated by altruistic reasons.
5. The theory of altruistic behavior in animals proposes that certain behaviors have evolved because they benefit the group as a whole.