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  • eso-
    eso-
    a combining form meaning “inner,” used in the formation of compound words.
  • ESO
    ESO
    abbreviation
    European Southern Observatory

eso-

American  
  1. a combining form meaning “inner,” used in the formation of compound words.

    esonarthex.


ESO British  

abbreviation

  1. European Southern Observatory

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of eso-

< Greek, combining form representing ésō within

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

"When a satellite crosses what we observe, it makes a bright streak on our image, zapping whatever is behind it," said ESO astronomer Olivier Hainaut, who led the study published in Astronomy & Astrophysics.

From Barron's Jul. 1, 2026

Europe's ESO star-gazing organisation on Monday welcomed plans to call off building a massive green energy project in the Chilean desert which threatened to spoil its telescopes' view of the darkest skies on Earth.

From Barron's Feb. 2, 2026

"The smaller size and faster rotation now measured will make Hayabusa2's visit even more interesting, but also even more challenging," says co-author Olivier Hainaut, an astronomer at ESO in Germany.

From Science Daily Nov. 21, 2025

Rich and Matt tell Newsbeat being able to turn around the early fortunes of ESO owes a lot to the former boss of Zenimax Online Studios, Robert A Altman, who died in 2021.

From BBC Jun. 17, 2024

"When doing background reading, I was struck by how special this system seemed," says Abigail Frost, an astronomer at ESO in Chile and lead author of the study published today in Science.

From Science Daily Apr. 11, 2024

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