What does the MySQL function name 'ELT' stand for?

I understand what the function 'ELT' does but what does it stand for? It doesn't state in the official documentation and I 开发者_运维问答can't seem to find it anywhere else either.

It stands for "Eagle, lettuce and tomato," the least-successful sandwich ever made.

Seriously, I believe it's just an abbreviation of "element," as in, give me the nth element of the following list.

The wikipedia page for ELT suggests it might mean this:

Extract, Load, Transform (ELT), a data manipulation process; in ELT, data is extracted, loaded into the database, and transformed where it sits in the database, prior to use; a different approach to loading data than the commonly known Extract, transform, load (ETL)

maybe "Element"? But following MySQL naming conventions I highly suspect the E to be from Extract or Explode.