The phrase "a outdoor" is not correct in written English.
The correct form would be "an outdoor" since "outdoor" begins with a vowel sound.
Example: "We decided to have an outdoor picnic at the park this weekend."
Alternatives: "an open-air" or "an outside".
The brewery hosts tours in the afternoons and has a pleasant tasting room and a outdoor courtyard for sampling their stout, lager and ale.
Bryant came unstuck in the high jump yesterday and was well out of medal contention but nevertheless posted a outdoor personal best in the pole vault and a season's best in the javelin as he finished 15th overall.
As part of the forest project Everitt wants to get a outdoor woodland classroom and a qualified forest school teacher into every primary school to embed what he says is a cultural change in the local community.
Checking out wheelchair clothes online, there are plenty of capes and coats that will keep out the chill (including a kind of fleece-lined sleeping bag that will come in useful at the pub near my parents house which is impossible to get a wheelchair into. I'm seriously considering buying a outdoor heater, too, so we can have a local pint outside come December).
Morgan, the former editor of the Daily Mirror and News of the World, will appear in a outdoor ad campaign lying in front of a blazing fire wearing a rapper-style Burger King gold chain with nothing but a small velvet rug covering his manhood.
He photographed the results: a mist of warm breath on a dark wood surface; a pattern of circles traced by wet bicycle wheels; oranges, like little celestial bodies, placed, one per table, on a receding line of tables in a outdoor market.
