sponsion /sponˈshən/

1. The act of becoming surety for another
2. An agreement or promise made on behalf of another, esp by an individual on behalf of his or her government

sponˈsional adjective

• iridectomies
• iridectomy
• irides
• iridescence
• iridescences
• iridescent
• iridescently
• iridial
• iridian
• iridic
• iridisation
• iridisations
• iridise
• iridised
• iridises
• iridising
• iridium
• iridiums
• iridization
• iridizations
• iridize
• iridized
• iridizes
• iridizing
• irido-