IPA: /ˌdɜːrməˈtɒlədʒɪkəl/
KK: /dɜrˌmætəˈlɒdʒɪkəl/
Related to the branch of medicine that deals with the skin and its diseases.
The dermatologist recommended a dermatological cream for my skin condition.
Dermatological → It is formed from "derma" (from Greek "derma", meaning skin) and "-logical" (from Greek "logia", meaning study or science). The word "dermatological" refers to the study or science of the skin.
Think of 'derma' meaning skin, and '-logical' meaning study. This helps you remember that dermatological relates to the study of skin.