It is just a word to describe what the doctor thinks is happening to you. Do not be afraid.
At the same time, this is a disease that can move rapidly. A lift chair and full electric bed can help you stand. Walkers and wheelchairs can help keep you safe and conserve your energy. Get familiar with what your insurance will cover. I found many helpful items on Amazon simply by looking at the items other people bought.
We used grab poles, a scooter, an electric wheelchair, a manual transfer device, and today a hoyer lift. All did the same thing, made the impossible possible.
Our neurologist gave us some wonderful advice. He said to decide then how we defined quality of life. For us, this meant no feeding tube, no pacemaker, no tracheotomy and no ventilator. We may change our minds, but that is because we do not believe anything is written in stone.