Tc -symbol
- technetium
TCDD [,tē-(,)sē-(,)dē-'dē] -n
- a carcinogenic dioxin C 12H 4O 2Cl 4found esp. as a contaminant in 2,4,5-T
TCE -abbr
- trichloroethylene
tchotch·ke ['chäch-kə, 'tsäts-] -n
- knickknack, trinket
TCP/IP [,tē-(,)sē-'pē-,ī-'pē] -n
- a set of communications protocols used for the exchange of information over networks and esp. over the Internet