Oranges are small to medium in size, averaging 5-10 centimetres in diameter, and are globular, oblate, or oval in shape. The rind ranges in colour from orange, yellow, to green and is smooth with a leathery texture, dotted with many small oil glands across the surface that produce fragrant essential oil. Underneath the rind, there is a thin layer of white pith that is bitter and spongy. The flesh is juicy, also ranges in colour from red, orange, to yellow, is filled with tightly packed pulp and juice sacs, and is divided into 10-14 segments by thin membranes. The flesh, depending on the variety, may also contain a few cream-colored seeds. Oranges are aromatic, juicy, and vary in flavour from sweet, acidic, tart, to sour.
Oranges are an excellent source of vitamin C, fibre, potassium, and have anti-inflammatory properties. They also contain some calcium, vitamin A, manganese, iron, copper, and magnesium.