PWM

PWM may stand for:

Science

• Position-specific scoring matrix or Position weight matrix, in bioinformatics, a commonly used representation in motifs (patterns) in biological sequences
• Pokeweed mitogen, a mitogen (chemical substance that triggers mitosis) derived from Phytolacca americana. It functions as a lectin

Technology

• Pulse-width modulation, is a very efficient way of providing intermediate amounts of electrical power between fully on and fully off
• The PWM (window manager), an X window manager
• Permanent Way Machine, the British Rail Class 97/6 locomotives
• Panzerwurfmine, a type of fin-stabilised shaped charge anti-tank hand grenade used by German Luftwaffe ground troops in World War II

Others

• Portland International Jetport (IATA airport code: PWM), an airport in Portland, Maine. The "PWM" stands for Portland-Westbrook-Municipal
• Professional Wealth Management, a financial magazine published by the Financial Times group
• Progressive Writers' Movement, a progressive literary movement in the pre-partition British India, consisting of a few different writers groups around the world