SEM Definition
    abbreviation
  
 Scanning electron microscope.
 American Heritage Medicine 
Semester.
 Webster's New World 
Semicolon.
 Webster's New World 
Semitic.
 Webster's New World 
Seminary.
 Webster's New World 
    noun
  
 Abbreviation of seminary.
Wiktionary 
Abbreviation of semester.
Wiktionary 
Abbreviation of semicolon.
Wiktionary 
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