mid·point 
/ˈmɪdˌpoɪnt/ noun
plural mid·points /ˈmɪdˌpoɪnt/ noun [count] : a point at the middle of something
▪ The crowd begins to leave after the midpoint of the final period. ▪ The team is in last place at the midpoint of the season. : a point halfway between two ends ▪ the midpoint between her knee and ankle ▪ The train stopped to refuel at the midpoint between New York and Chicago. ▪ the midpoint of one side of the rectangle
▪ The crowd begins to leave after the midpoint of the final period. ▪ The team is in last place at the midpoint of the season. : a point halfway between two ends ▪ the midpoint between her knee and ankle ▪ The train stopped to refuel at the midpoint between New York and Chicago. ▪ the midpoint of one side of the rectangle
