Definition of ad hoc in US English:

ad hoc

adjective & adverb

  • Formed, arranged, or done for a particular purpose only.

    ‘the discussions were on an ad hoc basis’
    as adverb ‘the group was constituted ad hoc’
    as adjective ‘an ad hoc committee’
    • ‘Wireless ad hoc networks are formed by a set of hosts that communicate with each other over a wireless channel.’
    • ‘On this webpage we provide a selection of web links that are all related in some way to wireless ad hoc networking.’
    • ‘My hypothesis that the watch is in your pocket because you stole it, is not an ad hoc hypothesis.’
    impromptu, extempore, extemporary, extemporaneous, expedient, emergency, improvised, rough and ready, makeshift, make-do, cobbled together, thrown together
    as the need arises, when necessary, when needed
    View synonyms

Origin

Latin, literally ‘to this’.

Pronunciation

ad hoc

/ˌad ˈhäk//ˌæd ˈhɑk/