terra firma UK /ˌtɛɹ.ə ˈfɜː.mə/US /ˌtɛɹ.ə ˈfɝ.mə/ noun3 •Familiar territory (in a figurative sense); real-world concerns.It's nice to be back on terra firma after a long session of analyzing the philosopher's abstruse theories. •(informal) Land, as opposed to water or air.Reize is a floaty character (thanks to that scarf), so this kick can be great for quickly getting back to terra firma or to that game-winning gem! — 2019 •Continental land, as distinguished from islands.