I'm sorry for any confusion, but "Lithuania" is not a medical term and does not have a medical definition. It is a country located in northeastern Europe, bordered by Latvia to the north, Belarus to the east and south, Poland to the south, and the Baltic Sea to the west. If you have any questions related to medical terminology or health-related topics, I would be happy to help answer them!
Critical and exhaustive investigation or experimentation, having for its aim the discovery of new facts and their correct interpretation, the revision of accepted conclusions, theories, or laws in the light of newly discovered facts, or the practical application of such new or revised conclusions, theories, or laws. (Webster, 3d ed)