The word "universe" refers to all of space and time, including all forms of matter, energy, and the physical laws that govern them. It encompasses everything that exists, from the smallest particles to the largest galaxies, and includes cosmic phenomena such as stars, planets, and even black holes. Essentially, it represents the totality of existence as we know it.
The word "universe" comes from the Latin "universum," which means "all turned into one" or "whole," deriving from "uni-" meaning "one" and "versum," meaning "to turn." This reflects the idea of all things in existence being part of a single whole.