academic type; scholarly disposition
Describes a person who is naturally inclined toward study and research, often with a somewhat bookish or unworldly character.
He is the academic type, spending even his days off holed up in the library.
People with a scholarly disposition tend to prefer theory over practical work.
Compound of 学究 (がっきゅう, 'study, research') and 肌 (はだ, 'skin; disposition'). The exact origin is uncertain, but it follows the pattern of words like 学者肌 (がくしゃはだ).