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peristalsis

per·i·stal·sis

peristalsis

 
pronunciation:
pe rih stawl sihs
part of speech: noun
inflections: peristalses
definition: a process of muscular contractions and relaxations along a tubular muscular system, such as that which forces food through the digestive system.
derivations: peristaltic (adj.), peristaltically (adv.)