What is HTML?

What I think HTML means is Hyper Text Markup Language meaning it is the form of creating actions in which the computer's system intakes in order to complete your commands through chronological sets of numbers and letters. It has to be very precise in order for your commands to work or the computer won'y understand what you're saying and will overthrow what you had typed. These sets of letters or numbers is named coding, which is a way of communicating with the computer and the only way it will understand. Coding is the way of writing HTML as well. I'm not too sure how the process works out but I have an idea on how it would.