Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.
compressibility and softening of the lower uterine segment, a probable sign of pregnancy; the lower uterine segment just above the cervix becomes so soft that when compressed between two fingers its wall cannot be felt or feels extremely thin.
Etymology: Alfred Hegar; L, signum, sign
a softening of the isthmus of the uterine cervix that occurs early in gestation. It is a probable sign of pregnancy.