≡

≡

1. (mathematics) "is equivalent to"
2. (mathematics) "is identically equal to"

   The functions f and g satisfy f≡g if and only if their respective domain of definition coincide, and if f(x)=g(x) for all x in this domain.

3. (mathematics) "is defined as, is set to"
4. (number theory) "is congruent to"; used in calculations of modulo.

   15≡3 mod 4, since both 15 and 3 gives a remainder of 3 when divided by 4.

5. (chemistry) A triple bond.
6. (logic, dated) if and only if
7. (logic) elementary equivalence
8. (meteorology) fog
9. (computing, dated) ISO 2047 symbol for Line Feed
10. (botany) homotypic synonym

• ≢

• ⩨
• ⧥

• =
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• Appendix:Variations of "≡"
• Appendix:Variations of horizontal lines

• Triple bar on Wikipedia.Wikipedia