Preoccupation with something to the exclusion of all else.

synonym: abstraction.

Roget 44: disjunction, disconnection, disunity, disunion, disassociation, disengagement; discontinuity etc. 70; abjunction^†; cataclasm^†; inconnection^†; abstraction, abstractedness; isolation; insularity, insulation; oasis; island; separateness etc. adj.; severalty; disjecta membra [Lat.]; dispersion etc. 73; apportionment etc. 786.    separation; parting etc. v.; circumcision; detachment, segregation; divorce, sejunction^†, seposition^†, diduction^†, diremption^†, discerption^†; elision; caesura, break, fracture, division, subdivision, rupture; compartition^†; dismemberment, dislocation; luxation^†; severance, disseverance; scission; rescission, abscission; laceration, dilaceration^†; disruption, abruption^†; avulsion^†, divulsion^†; section, resection, cleavage; fission; partibility^†, separability.    fissure, breach, rent, split, rift, crack, slit, incision.    dissection anatomy; decomposition etc. 49; cutting instrument etc. (sharpness) 253; buzzsaw, circular saw, rip saw.    separatist.    ... show more