▪ a dissenting group within a larger one: "the dominant classes or fractions in capitalist societies"
3. each of the portions into which a mixture may be separated by a process in which the individual components behave differently according to their physical properties: "the third fraction contain alcohols with boiling points of 120–130°C"
4. (in the Christian Church) the breaking of the Eucharistic bread:"the Fraction may be accompanied by the Agnus Dei"
Word Originlate Middle English: via Old French from ecclesiastical Latin fractio(n-) ‘breaking (bread)’, from Latin frangere ‘to break’.