Definition of "2" [2]

• The cardinal number two. (noun)
• A digit in the decimal system of numbering, as well as octal, and hexadecimal. (noun)
• A rotational symmetry element in the Hermann-Mauguin notation, indicating a rotation over π (twofold axis). (noun)
• (informal) abbreviation of to (preposition)
• (informal) abbreviation of to (preposition)

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