The tree of the species Citrus paradisi, a hybrid of pomelo (Citrus maxima) and sweet orange.
The large spherical tart fruit produced by this tree.
A small citrus tree (Citrus reticulata) with fruit resembling the orange.
The fruit of this tree, smaller than an orange and oblate. In daily usage, it may include other similar citrus fruits like Citrus unshiu (satsuma or mikan) Citrus tangerina (tangerine).