Definition of overextension in English:

overextension

noun

mass noun
  • The action of extending something too far.

    ‘overextension of the head and neck should be avoided’
    count noun ‘the financial crisis was precipitated by an overextension of credit’

Pronunciation

overextension

/ˌəʊv(ə)rɪkˈstɛnʃ(ə)n/