Definition:(noun) the act of invading; the act of an army that invades for conquest or plunder(noun) (pathology) the spread of pathogenic microorganisms or malignant cells to new sites in the body; "the tumor's ####### of surrounding structures" (noun) any entry into an area not previously occupied; "an ####### of tourists"; "an ####### of locusts"
| ** Please Select the best Word that fits the definition in the left column |