Final answer:
A joint that moves in all three anatomical planes is classified as a multiaxial joint, which includes ball-and-socket joints such as the hip and shoulder joints, allowing for extensive motion.
Step-by-step explanation:
A joint that moves in all three anatomical planes or around several axes would be classified as a multiaxial joint. This type of diarthrotic joint allows for a wide range of movement, including anterior-posterior, medial-lateral, and rotational motions. Ball-and-socket joints, like the hip and shoulder joints, are examples of multiaxial joints and provide a high degree of mobility, allowing the limb to move in many directions. Unlike other plane joints that can be functionally multiaxial but have movements constrained by ligaments or bones, ball-and-socket joints allow for larger movements.