How do you spell Composure

Available Definitions:
1)  n. - The act of composing, or that which is composed; a composition.
2)  n. - Orderly adjustment; disposition.
3)  n. - Frame; make; temperament.
4)  n. - A settled state; calmness; sedateness; tranquillity; repose.
5)  n. - A combination; a union; a bond.