ETYM Old Eng. dissolucioun dissoluteness, French dissolution, from Latin dissolutio, from dissolvere. Related to Dissolve.
1. Separation into component parts; SYN. disintegration.
2. The termination of a relationship; SYN. breakup.

ETYM Latin expiratio,exspiratio: cf. French expiration. Related to Expire.
1. Loss of validity, usually at the passage of a date.
2. The act of expiring; the act or process of breathing out, or forcing air from the lungs through the nose or mouth.