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Three dots that look identical: one marks omitted words, the other expands a value — and pasting the wrong one breaks the code.
The typographic ellipsis is a single character meaning words have been left out. The spread operator is three separate full stops that expand a collection into its elements. They render almost identically, so an ellipsis copied from a document into code does not parse — a genuinely confusing failure, because the line looks correct.
The typographic ellipsis marks omitted words; three separate full stops in code expand a value. An ellipsis character pasted into code does not parse.
Drawn from the visual attributes recorded for each symbol. Only traits the two records disagree about are listed.
| Trait | Ellipsis | Spread operator |
|---|---|---|
| Symmetry | vertical | horizontal |
| Ellipsis | Spread operator | |
|---|---|---|
| Characters | One | Three |
| Meaning | Words omitted | Expand a value into its elements |
| Parses as code | No | Yes |
| Also does the reverse job | No | Yes — gathers, in a parameter list |
| Relationship (from Symbolwise's records) | Commonly confused with Spread operator — The typographic ellipsis marks omitted words; three separate full stops in code expand a value. An ellipsis character pasted into code does not parse. | Commonly confused with Ellipsis — The typographic ellipsis marks omitted words; the spread operator is three separate full stops that expand a value. |
Unicode Code Chart: General Punctuation (U+2000–U+206F)
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.
ECMA-262, ECMAScript Language Specification
Ecma International · retrieved 2026-08-01
Authoritative for JavaScript's own syntax and only for that. A construct spelled the same way in another language may behave differently, and records say which language they are describing.
Wikipedia · retrieved 2026-08-01
Tertiary reference. Used for widely-agreed identity, origin and current use, not for contested detail or exact dates.
In code, three dots before a value expand it into its elements. In an interface, three dots in a row open a menu of further actions. Both are described as 'three dots' by the people who meet them, which is the entire basis of the confusion — there is no relationship between the two.
Both are drawn as one continuous decorative stroke with a closed loop and a tail that crosses back over itself, which is why a description of the shape alone reaches both. The clef is far taller, spans a stave, and its spiral encircles one specific line — that encircled line is the note G, and it is the only reason the shape is drawn where it is.
The ampersand is a ligature of the Latin word et, still visible in some italic forms where the e and the t can be picked out. The Tironian et is a separate mark descending from a Roman shorthand, shaped like a small seven, and it is in daily public use in Ireland as the written form of 'agus'. A reader who knows only the ampersand takes the other for a numeral, which on a bilingual road sign produces a confidently wrong place name.
A building's assembly point is a safe place to stand once you are outside. A ship's muster station is a staffed step in a procedure: you are counted against a roll, briefed, and if necessary allocated to a survival craft, which is why it has a letter or a number and appears on your cabin door card. Both are green, both show grouped figures, and both are called an assembly point in ordinary speech — and treating a muster station as somewhere merely to wait is the misunderstanding drills exist to correct.