A specified geographical tract of the Earth's surface including all its attributes, comprising its geology, superficial deposits, topography, hydrology, soils, flora and fauna, together with the results of past and present human activity, to the extent that these attributes exert a significant influence on the present and future land utilization. 
Η Στεριά, συνώνυμη της λέξης ξηρά και χέρσος, είναι το τμήμα της επιφάνειας της Γης που δεν καλύπτεται από νερό, δηλαδή δεν είναι θάλασσα ή λίμνη.