autovivification is completely unrelated to the aliasing process you asked about. Aliasing is the correct and magical term for what happens to Perl loop variables (but not their C equivalents) and to what happens with @_ elements which are aliases of the parameters passed into a sub.

This is very important and subtle magic and the word "alias" captures exactly what is going on. A large part of the magic is that most of the time you don't need to be aware of it.

Perl is the programming world's equivalent of English

In reply to Re^7: A specific term for a Perlism by GrandFather
in thread A specific term for a Perlism by JupiterCrash

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