plural of first mover

plural of first grade

(physics) A spectrum produced by a diffraction grating whose adjacent slits are one wavelength apart.

(often humorous) Even if a person is in his or her senior years, with gray hair, he or she can still have ambition and energy, especially sexual energy.

(programming) An exception (error condition) when handled by a debugger, such that the programmer has the first chance to study it; such an exception would otherwise proceed to a handler or (in its absence) crash the program.

plural of first-chance exception

plural of fire hose

plural of first baseman

plural of first language

Without fire.