(ecology) The ecosystem of the Earth regarded as a self-regulating superorganism.

The idea that both the biosphere and the inorganic components of Earth interact to form a coherent, complex system that allows for life to persist.

(astronomy, galactic archaeology) A former galaxy, which merged into the Milky Way Galaxy around 10 billion years ago, the remnants of which now form the Gaia Sausage population within the Milky Way Galaxy.

(astronomy) A stellar population within the Milky Way Galaxy that forms a sausage-shaped plot in velocity-space, which is thought to originate from a galaxy merger 10 billion years ago, with the Gaia-Enceladus galaxy, composing mostly Milky Way halo stars.

A city and municipality in Porto district, Portugal.

The belief and theory of Gaia model of interconnectedness of biosphere on Earth.

Foreign pressure; pressure applied by one country onto another.

a spiritual philosophy following the Gaia Theory of James Lovelock

Of or relating to Gaia.

A radical Green who views the ecology of the Earth's biosphere not only as the basis of human moral examples, but of all cognition and even sentience.