ط t̤oʼe or in Arabic t̤ā, called طاي مہمله or طاي غيرمنقوطه the sixteenth letter of the Arabic al- phabet, does not occur in pure Persian; but, in compliance with Arabic orthography, it is some- times introduced in Persian words which were originally written with ت; as, طبرزد for تبرزد, Sugar-candy; طبرخون for تبرخون, Red sanders.