In slang, ‘iso’ is short for ‘in search of.’ It’s often used in online forums, social media posts, or classified ads when someone is looking for something specific. For instance, if someone wants to find a vintage jacket, they might post an ‘ISO vintage jacket’ to let others know they are searching for one. ‘ISO’ is followed by the item, service, or experience the person is seeking, making it clear to others what they are looking for.

Whether it’s finding a rare collectible, a specific type of food, or even a new friend, ‘ISO’ is a handy way to express what someone is searching for in online communities.