parenthesis
US /pəˈren.θə.sɪs/
UK /pəˈren.θə.sɪs/

1.
paréntesis, inciso
a word, clause, or sentence inserted as an explanation or afterthought into a passage with which it has not necessarily any grammatical connection, usually marked off by brackets, dashes, or commas
:
•
The author used a parenthesis to add extra information.
El autor usó un paréntesis para añadir información extra.
•
His speech was full of interesting asides and parentheses.
Su discurso estaba lleno de interesantes apartes y paréntesis.
2.
paréntesis
either of a pair of round brackets ( ) used to mark off a parenthetical word or phrase
:
•
Please enclose the optional information in parenthesis.
Por favor, encierre la información opcional entre paréntesis.
•
The number in parenthesis indicates the page reference.
El número entre paréntesis indica la referencia de la página.