The adjective "outer" means relating to or situated on the outer surface, or being further from the center or inside. It can also refer to something that is farther away or more remote.
Usage examples
The outer layer of the Earth is called the crust.
The outer ring of the city is known for its beautiful parks and gardens.
She wore a warm jacket to protect herself from the outer chill.
The outer edges of the painting were smudged, ruining the overall effect.
The outer space exploration mission aims to study celestial bodies beyond our solar system.
The outer pocket of the backpack is perfect for carrying small items like keys or a phone.
The outer petals of the flower were vibrant red, while the inner ones were a delicate pink.
He carefully removed the outer shell of the walnut to reveal the edible kernel inside.
The outer layer of the onion is often discarded before chopping and using the inner layers.
The outer garment in her wardrobe collection was a stylish coat suitable for colder weather.