The space seems flattened and compressed, blurring the distinction between interior and exterior, between close and far away. When you flatten something, you crush it or level it out. If the recycling bin is getting full, you should probably flatten all those cans you're adding to it.

Understanding the Context

You might flatten the batter in a cake pan before baking it, or flatten the grass along a path through a field. If you flatten something or if it flattens, it becomes flat or flatter. He carefully flattened the wrappers and put them between the leaves of his book. 1.

Key Insights

To make flat or flatter. 2. To knock down; lay low: The boxer was flattened with one punch. to (cause to) become flat: [~ (+ out) + object] Flatten (out) the pizza dough with your hands. [~ (+ out)] They flattened (out) against the wall and strained to see who was coming.

Final Thoughts

Verb flatten (third-person singular simple present flattens, present participle flattening, simple past and past participle flattened) (transitive) To make something flat or flatter. The word "flattened" is correct and usable in written English. You can use it as an adjective to describe an object or surface that is no longer higher or fuller than before, or something that has been made flat.