A term used in the series [[Neon Genesis Evangelion]] to describe a protective [[energy]] field used by the [[angel_(evangelion)|Angels]]. It is short for "Absolute Terror Field". The most used form is the "Defensive AT Field", so when it is hit, there is a visible octagonal fluctuation.

The [[lance_of_longinus_(evangelion)|Lance of Longinus]] is the only known weapon capable of breaking it.
at field