▁of ▁the ▁United ▁States ▁Air ▁Force ▁ ▁Dem ro ▁T AC - 1 , ▁a ▁p istol ▁cal ib re ▁car bine / sub machine ▁gun ▁ ▁Mc Mill an ▁T AC - 5 0 , ▁an ▁American ▁sni per ▁rif le ▁ ▁Science ▁and ▁technology ▁ ▁T et rac aine , ▁Ad ren al ine ▁& ▁C oca ine , ▁a ▁liquid ▁mixture ▁sometimes ▁given ▁as ▁a ▁so othing ▁gel ▁to ▁children ▁ ▁Tri ac et yl ▁cell ul ose , ▁a ▁polym er ▁used ▁in ▁display ▁applications ▁ ▁T inned ▁Anne aled ▁Co pper , ▁a ▁common ▁type ▁of ▁co pper ▁wire ▁and ▁cable ▁ ▁T antal um ▁car b ide , ▁Ta C , ▁its ▁chemical ▁formula ▁ ▁Total ▁Ant io x id ant ▁Cap acity ▁ ▁Tr ig em inal ▁autonom ic ▁ce ph alg ia ▁ ▁Time - activity ▁curve , ▁trac er ▁concentration ▁within ▁a ▁region ▁of ▁interest ▁within ▁dynamic ▁image ▁pl otted ▁over ▁time . ▁ ▁Comput ing ▁ ▁T AC ▁( software ), ▁an ▁instant ▁mess aging ▁and ▁chat ▁client ▁program ▁ ▁t ac , ▁a ▁Linux ▁command ▁that ▁concaten ates ▁lines ▁in ▁reverse , ▁named ▁by ▁anal ogy ▁with ▁cat ▁( Un ix ) ▁ ▁Terminal ▁Access ▁Controller , ▁a ▁host ▁computer ▁that ▁accepts ▁terminal ▁connections ▁ ▁Th erm ally ▁Adv ant aged ▁Ch ass is , ▁an ▁Intel ▁computer ▁specification ▁ ▁Three - address ▁code , ▁a ▁representation ▁of ▁intermediate ▁code ▁used ▁by ▁comp ilers ▁ ▁T AC - 2 , ▁game ▁controller