1
a
: concerned with a particular end or purpose
an ad hoc investigating committee
b
: formed or used for specific or immediate problems or needs
ad hoc solutions
2
: fashioned from whatever is immediately available : improvised
On his desk sits an ad hoc model rocket, jerry-rigged together from a paper clip and an old pencil eraser.—John Semley
: for the particular end or case at hand without consideration of wider application
The decisions were made ad hoc.
Did you know?
In Latin ad hoc literally means "for this," and in English the term describes anything that can be thought of as existing "for this purpose only." For example, an ad hoc committee is generally authorized to look into a single matter of limited scope, not to broadly pursue any issue of interest. Ad hoc can also be used as an adverb meaning "for the particular end or case at hand without consideration of wider application," as in "decisions were made ad hoc."
Cite this Entry
“Ad hoc.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ad%20hoc. Accessed 18 Sep. 2026.
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