Does anyone use this to help them remember the spelling of specific words?

I know there’s a name for this specific process, but I’ve forgotten it. I was reminded of the whole thing by an episode of “The Waltons”, one of the later ones in which “Rose” is already living with the Waltons. In this episode, she was trying to help her grandson with his spelling and she used consecutive words, made up a non-sensical statement and told him to take the first letter of every word and that would spell the word he was looking for. For example:

Innocent = I Never Noticed Octopuses Carrying Every Needed Thing