From WoWWiki

Journeyman is the second, intermediate stage of a profession learned at the appropriate (Journeyman or better) profession trainer.

Additional notes:

• At 50 skill points (not counting any racial or other bonuses) you can learn the Journeyman stage and gain up to 150 points before you must learn Expert to advance.
• You must be level 10 to become a Journeyman.
• You can learn the Expert stage at 125 points before you reach 150 points.

Profession skill levels fall into five stages of increasing ability to learn and execute recipes: Apprentice, Journeyman, Expert, Artisan and Master (-only).