The middle degree or kingdom of the three degrees of glory in heaven. In the scriptures, the glory of the terrestrial kingdom is compared to the glory of the moon.
“Kingdoms of Glory,” True to the Faith
“Terrestrial Kingdom,” Encyclopedia of Mormonism
“My Life Is a Gift; My Life Has a Plan,” Ensign or Liahona, January 2008
“Charting the Plan,” New Era, July 2006
“The Three Kingdoms of Heaven,” Friend, February 1986
“The Three Kingdoms of Heaven (16 February 1832)”