Synonyms of 'immersion'
1 involvementDictionary, concentration, preoccupation
long-term assignments that allowed them total immersion in their subjects
2 dippingDictionary, submerging, plunging
The wood had become swollen from prolonged immersion.
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Someone's absorption in something is the fact that they are very interested in it and that it takes up all their attention and energy.
He was struck by the artists' total absorption in their work.
His talking kept breaking my concentration.
Preoccupation is a state of mind in which you think about something so much that you do not consider other things to be important.
He kept sinking back into gloomy preoccupation.
Thesaurus for immersion from the Collins English Thesaurus
Someone's immersion in a subject is their complete involvement in it.