Wiktionary
prep.phr. 1 out of date. 2 (context US military English) Not making the progress required.
Usage examples of "behind the curve".
A few lingered until the hull of the ship disappeared behind the curve of the world.
The huge solar dish that formed part of Detroit came slowly into view from beneath the Spindle, reached the bottom point of its plunge and was carried up and away out of sight again behind the curve of Detroit.
Pull in the ice-fishers, over there behind the curve of the drift.
Hidden from our sight, in what small privacy she might discover behind the curve of the suspended bubble, Glade was weeping quietly.
But in the case of this ship, Jadzia couldn't help thinking, the designers were behind the curve.
Jil-Lee gestured to the mountaintop behind the curve of the globe—.
It might lift, Jil-Lee gestured to the mountaintop behind the curve of the globe-about that far.
The sound of the trena followed them a long way, even after the town was lost behind the curve of the bay.
Though they were out of sight for the moment, hidden behind the curve of the buildings, Dennis could feel the ground shake as the beasts lurched from a shamble to a gallop.
He gave me no notice, never glanced in my direction, kept himself just behind the curve that separated us from Giraud and Ha.
With two slim masts, no superstructure, and telescoping smokestacks, she could run hull down, burning smokeless Cardiff coal, barely visible even in daylight, hiding behind the curve of the Earth.
He had scarcely moved when a score of men rushed him from behind the curve of the ship.