A metric used in NBA basketball that is similar to Field Goal Percentage, but adds an additional parameter.
2. (Government, Politics & Diplomacy) politics. a. the middle of a term of office, esp of a presidential term, when congressional and local elections are held. b. (as modifier): midterm elections.
Preterm labor is defined as regular contractions of the uterus resulting in changes in the cervix that start before 37 weeks of pregnancy. Changes in the cervix include effacement (the cervix thins out) and dilation (the cervix opens so that the fetus can enter the birth canal).