My love has beautiful brunette hair. Several years ago, encouraged by me (I love long hair on a woman), she decided to let it grow and see just how long it would get. “Terminal length” is the point at which hair stops getting any longer. I have been taking a photo every month, so we can be sure that it is still growing. It is.
It takes a great deal of looking after to avoid split ends and knots and I am very happy to help her with it. I wash it for her, blow dry it and help with it generally. We will see where it stops.