FLATTENED definition: 1. past simple and past participle of flatten 2. to become level or cause something to become…. Learn more.

The meaning of FLATTEN is to make flat. How to use flatten in a sentence.

Definition of flatten verb from the Oxford Advanced Learner's Dictionary. [intransitive, transitive] to become flat or flatter; to make something flat or flatter. The cookies will flatten slightly while cooking. …

1. To make flat or flatter. 2. To knock down; lay low: The boxer was flattened with one punch.

Dec 17, 2025 · flattened Definitions of flattened adjective having been flattened synonyms: planate

The dough flattened smoothly/easily. The land flattens (out) as you approach the coast.

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.

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.

FLATTEN definition: to make flat. See examples of flatten used in a sentence.

flattened definition: pressed into a thinner shape. Check meanings, examples, usage tips, pronunciation, domains, and related words. Discover expressions like "flattened like a pancake".