What is the word for the "type" of a magazine which is not published periodically or regularly?
i.e. It's none of the daily, weekly, monthly, annually and occasionally, etc.

Question

anonymous · Answer

perioical?

anonymous · Answer

bimonthly, semiannual,  seasonal?

how often does the magazines arrive?

anonymous · Answer

It can't be periodical, because it isn't published on regular intervals.
They publish the magazine whenever they want.

anonymous · Answer

Sporadic? If it doesn't have a fixed interval of time, I'm not sure if there is an established word for that type of magazine.

anonymous · Answer

Yup, I guess that's the word!
Thanks! :)