TIG welding. n. 1. (General Engineering) tungsten-electrode inert gas welding: a method of welding in which the arc is maintained by a tungsten electrode and shielded from the access of air by an inert gas.
The blade of the classic Roman stabbing sword, the gladius, was only some two feet long, though in the twilight years of the empire the gladius gave way to the spatha, the long slashing sword of the barbarians. Read More. in tactics: The legion. ...as a team.
The cycles of estrus are as follows: 1  Proestrus is a 10-day period where a dog will have spotting, or bleeding, from her vaginal area. 2  Estrus lasts for 5 to 9 days. 3  Diestrus lasts for 6 to 10 weeks. 4  Anestrus usually lasts for 15 weeks.