Parenthetical vs. Parenthesis — What's the Difference?

Set off within or as if within parentheses; qualifying or explanatory

A word or phrase inserted as an explanation or afterthought into a passage which is grammatically complete without it, in writing usually marked off by brackets, dashes, or commas

Using or containing parentheses.

An interlude or interval

A parenthetical word, phrase, or remark.

Either or both of the upright curved lines, ( ), used to mark off explanatory or qualifying remarks in writing or printing or enclose a sum, product, or other expression considered or treated as a collective entity in a mathematical operation.

Using, containing, or within parenthesis

A qualifying or amplifying word, phrase, or sentence inserted within written matter in such a way as to be independent of the surrounding grammatical structure.

That explains or qualifies something

A comment departing from the theme of discourse; a digression.

That is incidental

An interruption of continuity; an interval

A word or phrase within parentheses.

A clause, phrase or word which is inserted (usually for explanation or amplification) into a passage which is already grammatically complete, and usually marked off with brackets, commas or dashes.

(screenwriting) A descriptor or modifier enclosed within parentheses and put, indented, in a line of dialogue to describe how it should be acted or directed onscreen.

Either of a pair of brackets, especially round brackets, ( and ) (used to enclose parenthetical material in a text).

An expression in parentheses;

(rhetoric) A digression; the use of such digressions.

As if using parentheses;

Such brackets as used to clarify expressions by grouping those terms affected by a common operator, or to enclose the components of a vector or the elements of a matrix.

Qualifying or explaining; placed or as if placed in parentheses;

A word, phrase, or sentence, by way of comment or explanation, inserted in, or attached to, a sentence which would be grammatically complete without it. It is usually inclosed within curved lines (see def. 2 below), or dashes.

One of the curved lines () which inclose a parenthetic word or phrase.

Either of two punctuation marks (or) used to enclose textual material

A message that departs from the main subject