Definition of "occur" in English

verb

1. (intransitive) To happen or take place.

   • The liftoff will occur in exactly twelve seconds.

2. (intransitive) To present or offer itself.

   • I will write if the opportunity occurs.

3. (impersonal) To come or be presented to the mind; to suggest itself.

   • One little incident of my school days occurs to me as amusing.
   • It occurred to him to tell me of the problem.

4. (intransitive, sciences) To be present or found.

   • The chemical monofluoroacetate occurs in all parts of Dichapetalum cymosum, and is responsible for its toxic effects.