Pronunciation: /ˈmɛɡə-ɜrθ/
noun A large planet or celestial body that is significantly larger than Earth
A1 A mega-Earth is a hypothetical planet that is much larger than Earth.
A2 Scientists believe that a mega-Earth could potentially have a stronger gravitational pull than our planet.
B1 The discovery of a mega-Earth would revolutionize our understanding of planetary formation.
B2 Researchers are using advanced telescopes to search for signs of a mega-Earth in distant star systems.
C1 The existence of a mega-Earth would challenge current theories about habitable zones in the universe.
C2 Astrophysicists are debating the likelihood of finding a mega-Earth within our galaxy.
adjective Describing something as extremely large or massive in comparison to Earth
A1 The mega-Earth cake was too big for me to finish.
A2 The mega-Earth roller coaster was thrilling and exciting.
B1 Scientists are studying the possibility of a mega-Earth existing in another galaxy.
B2 The mega-Earth simulation allowed researchers to explore different planetary conditions.
C1 The concept of a mega-Earth challenges our understanding of planetary formation.
C2 A mega-Earth with multiple moons and diverse ecosystems would be a fascinating discovery.
formal A mega-Earth is a hypothetical planet that is much larger than Earth.
informal Have you heard about the concept of a mega-Earth? It's fascinating!
slang That planet is like a mega-Earth, it's huge!
figurative Her love for him was like a mega-Earth, vast and all-encompassing.
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