Split source-side alternatives in glossary:

Augen-Arzt;Augenarzt\toogarts

Will be split to:

Augen-Arzt\toogarts
Augenarzt\toogarts

#!/usr/bin/perl

while (<>){
	chomp;
	($lhs, $rhs) = split /\t/;
	foreach $s (split /;/, $lhs){
		print "$s\t$rhs\n";
	}
}

1. Put a copy of the glossary.txt file on your Desktop.
2. Use a plain text editor to create a file called splitterms.pl. Copy the Perl script above into it and save it to your Desktop.
3. Open Terminal and execute the following two lines:
cd ~/Desktop
perl splitterms.pl glossary.txt > newglossary.txt

The file newglossary.txt will appear on your Desktop in the format you want.