double arrow
Two-way direction indicator
A double arrow is a symbol with arrowheads at both ends (↔), typically indicating bidirectional movement, mutual relationship, or equivalence.
In logic and mathematics, it represents "if and only if." On keyboards and interfaces, double arrows (« ») serve as navigation controls or quotation marks.
Paired single arrows (→←) pointing inward or outward also count as double arrows, suggesting compression or expansion.
- bidirectionalOperating in both directions
- back and forthRepeated alternating movement
- cursorOn-screen position indicator
- navigateGuide through terrain
- scrollWound document of parchment
both directions · expand · resize · pointer · chevron · forward · fast forward · backward · left · right · up · down · drag · click · interface · icon · symbol · indicator
- logicpremise, premises, conclusion, conclusions, inference
- Chemistry Notationchemical symbol, chemical formula, molecular formula, chemical equation, subscript
- hyperoperationsaddition, multiplication, exponentiation
- symbolssymbols, runes, symbol, asterisks, national symbol
- operatorsplus, minus, negation, equals, not
double arrowright arrow
Directional symbol facing east
forward arrow · left arrow · directional arrow · one-way · unidirectional
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