Final answer:
In the word dystrophy, the suffix -trophy means development, nourishment. It relates to conditions like Duchenne muscular dystrophy (DMD), where there's muscle weakening due to a protein deficiency.
Step-by-step explanation:
In the word dystrophy, the suffix -trophy refers to development, nourishment. This can be seen in medical contexts where words like atrophy are used to describe a decrease in muscle size due to lack of use. Hence, atrophy signifies a lack of development or nourishment to maintain muscle mass. Disorders of the Muscular System such as Duchenne muscular dystrophy (DMD) directly relate to these concepts. DMD involves a progressive weakening and loss of muscle due to insufficient dystrophin, a crucial protein for muscle integrity.