- township TWS – (i) Thermal Weapon Sight – Track While Scan TWT - traveling wave tube TWX - telex TWIP – (a) Take What Insurance Pays – When a surgeon agrees to accept a lower payment than he ordinarily would for a procedure and not charge the patient the difference TX TX – (s) Texas (postal symbol) – Transmit – Turkmenistan (FIPS 10-4 country code) TXV – Thermostatic Expansion Valve TY ty – (s) Tahitian language (ISO 639-1 code) TYT – Take Your Time – Internet chat abbreviation TZ TZ – (s) Tanzania (ISO 3166 and FIPS 10-4 country code digram) TZA – (s) Tanzania (ISO 3166 trigram) TZC – (p) Tetrazolium chloride TZS – (s) Tanzanian shilling (ISO 4217 currency code) References Acronyms T