TI


Meaning of TI in English

ti /tiː/ BrE AmE noun [singular]

[ Date: 1800-1900 ; Origin: si 'ti' (18-19 centuries) ]

the seventh note in a musical ↑ scale according to the ↑ sol-fa system

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.