A Definition of disability

" ....a physical or mental impairment that has a substantial and Long-term negative effect on your ability to do normal daily activity"

substantial: more than minor or trivial, e.g. it takes much longer than it usually would to complete a daily task, like getting dressed or cooking

long-term: 12 months or more, e.g. a breathing condition that develops a sa result of a lung infection

source:  The equality act 2010