gig·a·ton 
(gĭgə-tŭn′, jĭg-)
(gĭgə-tŭn′, jĭg-)n.
A unit of explosive energy equal to that of one billion (109) tons of TNT.
- telephotograph
- telephotographic
- telephotography
- teleplay
- teleport
- teleportation
- teleprinter
- teleprocessing
- TelePrompTer
- telescope
- telescopic
- telescopically
- telescopist
- Telescopium
- telescopy
- teleshop
- teleshopper
- telestereoscope
- telesthesia
- telesthetic
- teletext
- teletheater
- telethermoscope
- telethon
- Teletype