Not an abbreviation. And I wrote what the configuration is. But more info, a person who has something fated to complete in their current lifetime, has a yod. This is always based on what they have worked towards in the past. This can be something quite minor and personal, or something large-scale, as in Hitler's case (he had 2 yods).
Only planets count in yods, the AC can be included only if it is apex and less than 1 degree orb.