Undulating mass Synonyms

Undulating replaced

Synonyms for phrase

UM abbreviation

UM is an abbreviation for Undulating Mass
What does UM stand for?
UM stands for "Undulating Mass"

Definitions for Mass


  • (noun) a considerable amount
  • (noun) a distinct and separate portion of matter
  • (noun) the main or greater part of something as distinguished from its subordinate parts