letter
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AI overview
A letter is a written symbol used in alphabetic writing systems like English or Spanish to represent sounds in a language. Letters matter because they are the basic building blocks that allow us to write and read words, making written communication possible.
AI-generated from the Wikipedia summary — may contain errors.
Article
In a writing system, a letter is a grapheme that generally corresponds to a phoneme—the smallest functional unit of speech—though there is rarely total one-to-one correspondence between the two. An alphabet is a writing system that uses letters.
Definition and usage