noun The act of setting apart and organizing things based upon their characteristics.
noun The separation of people based upon race, sex, religion, or other identity in institutions.
noun The setting apart in Mendelian inheritance of alleles, such that each parent passes only one allele to its offspring.
noun Separation from a mass, and gathering about centers or into cavities at hand through cohesive or adhesive attraction or the crystallizing process.
noun The separation of people (geographically, residentially, or in businesses, public transit, etc) into racial or other categories (e.g. religion, sex).
noun The separation of people (geographically, residentially, or in businesses, public transit, etc) into various categories which occurs due to social forces (culture, etc).
noun The separation of a pair of chromatids or chromosomes during mitosis and meiosis
noun Separation for practical reasons, by necessity.