Definition of parenthetical in English:



  • Relating to or inserted as a parenthesis.

    ‘parenthetical remarks’
    • ‘It is better in the long run to create two URL patterns with no metacharacters than it is to create one with parenthetical clauses.’
    • ‘Providing parenthetical information or explanatory footnotes on those not discussed in the introductions might have been more helpful than relegating the information to the index.’
    • ‘He was becoming parenthetical: he felt like an eclipsed moon.’
    • ‘The inclusion of a parenthetical clause, as in this case, would not normally alter the meaning of the provision into which it is inserted though what is required to satisfy it may well be different.’
    • ‘For Avison, at this stage of her career and life, it appears only as a parenthetical insertion, a possibility.’
    incidental, supplementary, by-the-way, by-the-by, in parentheses, parenthetic, in brackets
    View synonyms


Late 18th century: from parenthesis, on the pattern of pairs such as synthesis, synthetic.