midseason adjective 1noun 1forms 1 adjective1 •Occurring in the midseason.This apple is a midseason variety grown best in northern climates.The midseason finale had a great cliffhanger. noun1 •The middle part of a season, such as a sporting, television, or growing season.Tourism has a high season (summer), a midseason (spring and fall), and a low season (winter).The amount of water needed is about 50% of the water used in the midseason. formsmidseasons