This meaning derives from Greek and indicates that something is situated or operates outside another structure.
Exoskeleton contains exo- in the sense of outside.
An exocrine gland releases substances through a duct.
This use marks a process involving movement, secretion, or transport toward the outside.
Exocytosis moves material out of a cell.
The term describes an outward biological process.
This meaning appears in terms describing objects or phenomena located beyond a defined system, especially Earth or the solar system.
An exoplanet orbits a star outside our solar system.
Exobiology studies the possibility of life beyond Earth.
