noun
nebula
NEHB-yuu-luh
noun
1
A vast cloud of gas and dust in space, often glowing or reflecting light from nearby stars.
"The telescope captured stunning colors in the Orion Nebula."
"New stars are often born inside a nebula."
2
Medical: a cloudy patch on the cornea of the eye.
"The nebula on his cornea slightly blurred his vision."
How to Use Nebula
Learner’s notesIn plain EnglishA cloud-like formation of gas and dust in space, often where stars are forming.
Common pairings
the Orion Nebula
a spiral nebula
nebula cloud
Word Forms
nebulae plural, nebulas plural, nebulæ plural
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Etymology
From Latin nebula, meaning "little cloud" or "mist."