Calamansi is the Philippine English spelling of Tagalog "kalamansi" (), and is the name by which it is most widely known in the Philippines. In parts of the United States (notably Florida), calamansi is also known as "calamondin", an old name from the American period of the Philippines. It is an anglicized form of the alternate Tagalog name "kalamunding". Other English common names of calamansi include: Philippine lime, calamonding, calamondin orange, calamandarin, golden lime, Philippine lemon, Panama orange (also used for kumquats), musk orange, bitter-sweets and acid orange.