vad-, vas-

Tending to invade the walls of blood vessels.

1. To escape or to manage not to do something, or to manage to stop something from happening, usually by ingenuity or guile.
2. To avoid, or to shun, doing something unpleasant, especially something that is a moral or legal obligation.
3. To avoid, or to stay clear of, dealing with or responding directly to something.
4. To avoid fulfilling, answering, or performing anything.
5. To be difficult or impossible for someone to find, obtain, or achieve: "Being successful in his lexicographic work has always evaded him."

Similar to podosomes; however, most researchers define podosomes as more dynamic than invadopodia and smaller; one to two micrometers in diameter compared to eight to ten micrometers.

Some researchers have suggested that podosomes form first and then mature into invadopodia, but no consesus exists among cell biologists, yet.

Feetlike structures aid the necessary migrations of immune and other cells, but they also include the deadly wanderings of cancer cells because they exploit the same ambulatory skills to spread.