⟦ ⟧

⟦ U+27E6, ⟦ MATHEMATICAL LEFT WHITE SQUARE BRACKET ← ⟥ [U+27E5] Miscellaneous Mathematical Symbols-A ⟧ → [U+27E7]

⟧ U+27E7, ⟧ MATHEMATICAL RIGHT WHITE SQUARE BRACKET ← ⟦ [U+27E6] Miscellaneous Mathematical Symbols-A ⟨ → [U+27E8]

Translingual

Punctuation mark

⟦ ⟧

1. (IPA) Encloses IPA symbols to indicate that they have their canonical values. E.g. ⟦e⟧ is specifically a close-mid vowel, and not for example a mid vowel as the broader notation [e] might cover.
2. (semantics) denotes the extension of a word, phrase or sentence.