Learner's definition of DESCENT
1 [count] : the act or process of descending: such as a : the act or process of going from a higher to a lower place or level — usually singular
b : the act or process or changing to a worse state or condition
The climbers were faced with a dangerous descent in bad weather.
the submarine's descent
After only an hour of flight, the pilot announced our descent.
2 [count] : a way of going down something : a downward slope, path, etc. 3 [noncount] : the people in your family who lived before you were born : your ancestors
Many people in this area are of German descent. [=ancestry]
They claim to be of royal descent. [=they say that their ancestors were kings, queens, etc.]