□
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See also: ☐
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Translingual[edit]
Description[edit]
Symbol[edit]
□
- (geometry) A quadrilateral, usually referred to a square or rectangle.
- □ABCD
- A quadrilateral with vertices named A, B, C, and D in order.
- A male family member in a family tree.
- Antonym: ○
- (logic) logically necessary; provable
- Coordinate term: ◇
- 2009, Logique et analyse, page 193:
- […] obtained by adding the standard modal operators □ (necessity) and ◇ (possibility) to paralogics.
- (astrology) quadrature.
- (alchemy) salt.
Synonyms[edit]
Coordinate terms[edit]
- (logical necessity): ◊
Chinese[edit]
Symbol[edit]
□
- Used as a placeholder for an illegible hanzi or lacuna.
- Used as a placeholder for an unknown hanzi (as when discussing dialectal morphemes).
- (Internet slang) Used in self-censorship of sensitive characters.
- alt. forms: 口 (kǒu)