To dry or earth; also related to the earth
Terria is likely a modern elaboration of the Latin 'Terra', meaning earth, or a feminine variant of Terry, which derives from the Germanic name Theodoric meaning 'ruler of the people'. It gained some use in the mid-20th century as part of a trend of adding '-ia' suffixes to established names.
Less common today
Terria isn't in the latest US Top 1000. It last peaked at #3,624 in 1992.
US births per 5-year period, 1990βpresent (SSA data).