engrossment
(noun)
noun
1. complete attention; intense mental effort
Similar word(s): absorption, concentration, immersion
Definition categories: thought, attention
2. the mental state of being preoccupied by something
Similar word(s): absorption, preoccupancy, preoccupation
Definition categories: thought
3. the quality of being intent and concentrated
Similar word(s): intentness
Definition categories: attribute, assiduity, assiduousness, concentration