flatten
v.
late 14c., "to prostrate oneself," also "to fall flat," from flat, adj. + -en(1). Transitive meaning "to make flat" is 1620s. Related: Flattened; flattening.
| 词汇 | flatten |
| 词根词缀 | Online Etymology Dictionary flatten v. late 14c., "to prostrate oneself," also "to fall flat," from flat, adj. + -en(1). Transitive meaning "to make flat" is 1620s. Related: Flattened; flattening. |
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