8-Letter Words Starting I & Ending ON

• A line on a chart linking rock of the same age (especially as measured using the ratios of lead isotopes)

• lock up or confine, in or as in a jail

• confine as if in a prison

• the act of invading; the act of an army that invades for conquest or plunder

• any entry into an area not previously occupied

• (pathology) the spread of pathogenic microorganisms or malignant cells to new sites in the body

• a solution obtained by steeping or soaking a substance (usually in water)

• the process of extracting certain active properties (as a drug from a plant) by steeping or soaking (usually in water)

• (medicine) the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force)

• the act of infusing or introducing a certain modifying element or quality

• Inherence; act of inhering

• a depression scratched or carved into a surface

• the cutting of or into body tissues or organs (especially by a surgeon as part of an operation)

• the state of being inactive

• the process of initiating combustion or catching fire

• the mechanism that ignites the fuel in an internal-combustion engine

• the act of setting something on fire

• the process of forming and relating ideas