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nomo-

American  
  1. a combining form meaning “custom,” “law,” used in the formation of compound words.

    nomology.


nomo- British  

combining form

  1. indicating law or custom

    nomology

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of nomo-

< Greek nomo-, combining form of nómos law, custom; akin to némein to manage, control