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The same crossed diagonals multiply in arithmetic and close a window on a screen.
Context decides entirely, because the glyphs are identical. Between two numbers it multiplies. In the corner of a panel it closes it. Beside an answer it marks the answer wrong. Nothing about the shape distinguishes the three, and the interface use carries its own ambiguity: the same mark rejects a value and dismisses the panel containing it.
The same crossed diagonals: in arithmetic they multiply, in an interface they close or reject.
Drawn from the visual attributes recorded for each symbol. Only traits the two records disagree about are listed.
| Trait | Multiplication sign | Cross mark |
|---|---|---|
| Built from | crosses, lines and dots | crosses |
| Symmetry | bilateral | radial |
| Multiplication sign | Cross mark | |
|---|---|---|
| Where you see it | Between two quantities | In interface corners and beside answers |
| What it does | Multiplies | Closes, rejects, or marks as wrong |
| Shape | Two crossed diagonals | Two crossed diagonals |
| Ambiguous within its own domain | No | Yes — reject or dismiss |
| Relationship (from Symbolwise's records) | Commonly confused with Cross mark — The same crossed diagonals: in arithmetic they multiply, in an interface they close or reject. | Commonly confused with Multiplication sign — The same crossed diagonals: in arithmetic they multiply, in an interface they close or reject. |
Unicode Code Chart: Latin-1 Supplement (U+0080–U+00FF)
The Unicode Consortium · retrieved 2026-07-30
Authoritative for the character's code point, name and block only. Unicode assigns identity; it does not define what a symbol means in use.
Wikipedia · retrieved 2026-07-30
Tertiary reference. Used for widely-agreed identity and origin summary, not for contested detail or exact dates.
Wikipedia · retrieved 2026-08-01
Tertiary reference. Used for widely-agreed identity, origin and current use, not for contested detail or exact dates.
Wikipedia · retrieved 2026-08-01
Tertiary reference. Used for widely-agreed identity, origin and current use, not for contested detail or exact dates.
Alpha is a Greek letter and stands for a quantity — an angle, a coefficient, a significance level. The proportionality sign is an operator and stands between two quantities to say they keep a constant ratio. The drawings differ in that the proportionality sign's right-hand stroke runs out in an open curve rather than closing into the letter's tail.
Look at the left-hand edge. A straight flat back is an AND gate: the output is true only when every input is. A curved concave back is an OR gate: true when any input is. Everything else about the shapes is similar, which is why the back edge is worth checking deliberately rather than at a glance.
Look at what follows. A prefix never stands alone — it is glued to a unit symbol, as in kW or kg. A constant stands by itself in an equation. Careful physical writing subscripts the constant as k_B for exactly this reason, and the kelvin's capital K is a third claimant to the same letter.
Length is the tell. A crescendo hairpin is drawn long, below a stave, and spans the passage it applies to — its extent *is* the instruction. A less-than sign is one character wide and sits between two values. If it stretches, it is music; if it fits between two numbers, it is mathematics.