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Pronunciation varies by accent · noun
(science fiction) The construction of megastructures in space by technologically advanced beings..
Use astroengineering when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Astroengineering means (science fiction) The construction of megastructures in space by technologically advanced beings..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use astroengineering where its definition matches the intended context.
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