The meaning of the Acronym SEM is...

SEM is

• Sexually Explicit Material

More Meanings For SEM:

• State Event Machines
• Search Engine Marketing
• SmartStream Encryption Modulator
• Security Event Management
• Synthesis Enterprise Manager
• Solvent Extractable Material
• Synthesizer Expander Module
• Standard Error of Mean
• Space Environment Monitor
• Scanning Electron Microscope
• Space Environment Monitor
• Structural Equation Models
• Structural Equation Modeling
• Secondary Electron Multiplier
• Science, Engineering, and Mathematics

SEM is also in:

• Chemistry
• Electronics
• General
• Hardware
• Mathematics
• Meteorology
• Ocean Science
• Physics
• Security
• Software
• Universities