Meaning & Definition of word "Extragalactic"

Extragalactic

/ˌɛkstrəɡəˈlæktɪk/

adjective:

  • 1. Relating to or denoting objects outside the Milky Way galaxy.
    • Example: The extragalactic observations revealed several new galaxies previously hidden from view.
  • 2. Pertaining to the study of astronomical phenomena beyond our galaxy.
    • Example: Astrophysicists often focus on extragalactic research to understand the structure of the universe.
  • 3. Describing phenomena or entities that exist outside the boundaries of our galaxy.
    • Example: The team used advanced telescopes to capture images of extragalactic gamma-ray bursts.
  • 4. Of or relating to regions outside the Milky Way galaxy.
    • Example: Extragalactic astronomy has provided insights into the nature of dark matter.

Etymology

From 'extra-' meaning 'beyond' and 'galactic' relating to the galaxy.

Common Phrases and Expressions

extragalactic astronomy:

The branch of astronomy that deals with phenomena outside the Milky Way galaxy.

extragalactic object:

Any celestial body that is located outside of the Milky Way galaxy.

Related Words

galaxy:

A system of stars, stellar remnants, interstellar gas, dust, and dark matter.

nebulas:

A cloud of gas and dust in space, often a region where new stars are born.

cosmology:

The science of the origin and development of the universe.

Slang Meanings of extragalactic

Meaning: Out of this world

Example Sentence: That view of the extragalactic sky was totally out of this world!

Meaning: Deep space

Example Sentence: He's planning to travel to some extragalactic deep space for his research.