Some of my British friends use the word 'tedious' to mean 'annoying.' A recent example:
The museums in Oslo aren't open on Mondays. That's a bit tedious.
I'm a native American English speaker and unfamiliar with this usage. I looked it up and only found the definition I'm familiar with :
Too long, slow, or dull; tiresome or monotonous
Is this a British variation on the definition that is known in the United Kingdom but that hasn't entered dictionaries yet?