How to say “What is this called?” in Greek

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Πώς το λένε αυτό; pos to LE-ne af-TO

What is this called?

“Πώς το λένε αυτό στα ελληνικά;”

What is this called in Greek?

This word doesn't change form the way verbs, nouns, and adjectives do — what you see above is its only form.