What is the meaning of Openness?

Accommodating attitude or opinion, as in receptivity to new ideas, behaviors, cultures, peoples, environments, experiences, etc., different from the familiar, conventional, traditional, or one's own.

The degree to which a person, group, organization, institution, or society exhibits this liberal attitude or opinion.

Lack of secrecy; candour, transparency.

The degree of accessibility to view, use, and modify in a shared environment with legal rights generally held in common and preventing proprietary restrictions on the right of others to continue viewing, using, modifying and sharing.

The degree to which a system operates with distinct boundaries across which exchange occurs capable of inducing change in the system while maintaining the boundaries themselves.

Source: wiktionary.org