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Noun
a conventional or arbitrary mark, figure, or symbol used as an abbreviation for the word or words it represents.
a notice, bearing a name, direction, warning, or advertisement, that is displayed or posted for public view
Mathematics .
- a plus sign or minus sign used as a symbol for indicating addition or subtraction.
- a plus sign or minus sign used as a symbol for indicating the positive or negative value of a quantity, as an integer.
- multiplication sign.
- division sign.
- a symbol, as or !, used to indicate a radical or factorial operation.
Verb phrases
sign off,
- to withdraw, as from some responsibility or connection.
- to cease radio or television broadcasting, esp. at the end of the day.
- Informal . to become silent
- He had exhausted conversation topics and signed off.
- to indicate one's approval explicitly if not formally
- The president is expected to sign off on the new agreement.
tác giả
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