analytic philosophy

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A cluster of philosophical traditions holding that argumentation and clarity are vital to productive philosophical inquiry.
• noun A philosophical school of the 20th century whose central methodology is the analysis of concepts or language. Leading practitioners have included Bertrand Russell, George Edward Moore, Rudolf Carnap, and Ludwig Wittgenstein.
• noun Philosophy as professionally practiced in the United States and Great Britain in the 20th century.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun philosophy A style of philosophy that came to dominate English-speaking countries in the 20th century.