The act or result of dividing
separation, separating, detachment, apportionment, sharing, partition, parting, partitioning, distribution, severance, divorce, dissociation, cutting, disseverance, carving, subdivision, subdividing, dismemberment, disconnecting, disconnection, distinction, distinguishing, classification, selection, segmenting, segmentation, sectioning, parceling, analysis, diagnosis, dissection, autopsy, reduction, breaking down, breaking up, compartmentalization, districting, rending, scissure, splitting, disuniting, disunion, disassociation, breaking, breakdown, fracture, fissure, branching, divergence, bisection, bipartition, demarcation, disjuncture, contrasting, departmentalizing, schizogenesis, fission, schizogony, mitosis, meiosis.
Antonyms union*, joining, gluing.
A part produced by dividing
section, kind, sort, portion, compartment, share, split, member, subdivision, parcel, segment, fragment, sector, department, category, branch, ramification, fraction, dividend, measure, percentage, percentile, degree, piece, slice, lump, wedge, cut, lobe, front, movement, column, book, chapter, decade, verse, canto, phrase, clause, line, paragraph, act, scene, episode, passage, apartment, cell, class, moiety, race, clan, tribe, caste, group, unit; see also army 2, class 1, 2, 3, department 1, 2, part 1.
Discord or disunion
dissension, disagreement, breach, schism; see sense 1; disagreement 1, dispute.
Something that divides
dividing line, partition, boundary, divider; see barrier, boundary.
An organized area
province, country, state, dominion, shire, department, district, county, municipality, city, town, canton, village, commune, ward, township, residency, constituency, bishopric, prelacy, parish, range; see also nation 1, territory 2. See syn. study at part.