It mean Heterozygous which is a genetic term describing an animal that posses the gene for a recessive gene, in this case Albino but does not show the trait (he looks normal)
A 100% Het Albino is the result of Albino X Normal or Albino X Het Albino cross.
The animal looks like a normal but 100% for sure carries the gene for albino, there are hets that are not 100% because neither parent was a visible albino. If one of the parents is a visible albino all of the babies will be 100% but if one or both parents are a het the babies are not 100% unless proven meaning bred and produced visible albino(s).
Cause when push comes to shove you taste what you're made of
You might bend, till you break cause its all you can take
On your knees you look up decide you've had enough
You get mad you get strong wipe your hands shake it off
Then you Stand