noun 1. [ mass noun] — existence • the railway brought many towns into being
• the single market came into being in 1993.
2. being alive; living • holism promotes a unified way of being.
3. [in sing.] — the nature or essence of a person • sometimes one aspect of our being has been developed at the expense of the others.
4. a real or imaginary living creature or entity, especially an intelligent one • alien beings
• a rational being.