(Citrus grandis), citrus tree of the family Rutaceae, reaching 6-13 m (20-43 feet) in height. Shaddock is allied to the orange and the lemon and is presumably native to Malaysia and Polynesia. The name shaddock is said to have derived from that of a captain who introduced the tree to the West Indies. The leaves are like those of the orange but have broadly winged petioles and are downy on the undersurface, as are also the young shoots. The flowers are large and white and are succeeded by very large spheroid or almost pear-shaped fruits, resembling grapefruit, lemon yellow in colour, and with a pungent, tart, but agreeable flavour. The pulp segments are either pallid or red and shell out easily. The fruit is highly prized in the Orient