infrastructure /inˈfrə-struk-chər/

1. Inner structure, structure of component parts
2. A system of communications and services as backing for military, commercial, etc operations

infrastrucˈtural adjective

• stethoscopes
• stethoscopic
• stethoscopically
• stethoscopies
• stethoscopist
• stethoscopists
• stethoscopy
• stets
• Stetson
• Stetsons
• stetted
• stetting
• stevedore
• stevedored
• stevedores
• stevedoring
• steven
• stevengraph
• stevengraphs
• stevens
• stevia
• stevias
• stew
• steward
• stewarded