ر re called راي مـﮩمله and راي غيرمنقوطه is the tenth letter in the Arabic and twelfth in the Per- sian alphabet, corresponding to र in Sanskrit. Its pronunciation is that of the English r when fully sounded. In denoting numbers by the letters of the Arabic alphabet, it stands for 200. It is interchangeable with ل and د; as, يدسل for يرسل he will send; دجره for دجله the river Tigris; اروند for الوند the name of a mountain. Sometimes ي is used for it; as, قيراط for قرّاط the name of a weight. In Hindī, besides ल it is also interchanged with ड. In almanacks, it is the astronomical character for the moon: and, in dates, it denotes the month ربيع الاوّل.