[ninalanyon]

Which dictionaries are they? I've never seen that. Here's the entry from the Cambridge Dictionary:

a type of work that you feel you are suited to doing and to which you should give all your time and energy, or the feeling that a type of work suits you in this way:

I feel I've found/missed my true vocation.

Most teachers regard their profession as a vocation, not just a job.

To work in medicine, you should have a vocation for it.

Synonym calling formal

Compare career noun

https://dictionary.cambridge.org/dictionary/english/vocation