/
ˈfrakʃ(ə)n/
n.
    - a numerical quantity that is not a whole number (e.g. ¹⁄₂, 0.5).
 - a small or tiny part, amount, or proportion. 
▸a dissenting group within a larger one.
 - Chemistry  each of the portions into which a mixture may be separated according to a physical property such as boiling point or solubility.
 - 
(usu. the Fraction)
 (in the Christian Church) the breaking of the Eucharistic bread.
 
Etymology
ME: via OFr. from eccles. L. fractio(n-) ‘breaking (bread)’, from L. frangere ‘to break’.