uterine contraction

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a rhythmic tightening in labor of the upper uterine musculature that contracts the size of the uterus and pushes the fetus toward the birth canal
• Hypernyms:
contraction, muscular contraction, muscle contraction
• Part Holonyms:
parturiency, labor, labour, confinement, lying-in,
travail, childbed