# hoc

/ˈhɑk/ (US) · CEFR C1 · Adjective

Source: https://englishreference.com/word/hoc
Updated: 2026-05-06

## Definition

created or done for a specific purpose only, rather than being part of a regular plan. You use this to describe something that is temporary and meant to solve a single problem.

For teachers: formed, arranged, or done for a particular purpose only; lacking a pre-arranged plan or general application. Often follows a linking verb or modifies a noun directly.

## Examples

- The committee was formed on an ad hoc basis.
- The team held an ad hoc meeting to address the sudden technical failure before the product launch.
- Rather than establishing a permanent department, the administration relied on ad hoc task forces to manage the immediate logistical challenges of the crisis.

## Usage notes

- Often used in the phrase 'on an ad hoc basis'. When used as an adjective before a noun, it is frequently hyphenated in formal writing ('an ad-hoc committee').

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.