The phrase "terminal stages" refers to the final phase or last part of a process or disease that cannot be reversed and is leading to an end or death. Full definition
She has cared for patients in the beginning, advanced, and terminal stages of their disease. (bookbrowse.com)
Clinically affected dogs are often young (3 - 18 months of age) and present with poor weight gain, progressive peripheral neuropathy including ataxia, leg crossing, tremors and paresis which worsens with exercise.Behavioral changes, blindness, dementia, anorexia, cachexia, urinary incontinence and muscle weakness affecting all four limbs are usually present in terminal stages of the disease with death occurring 2 - 6 months after onset of clinical signs, necessitating euthanasia. (vetgen.com)
«They are ready to play in a senior team and I believe that Championship level is a very good terminal stage of the education of a player. (justarsenal.com)