. "millisecond (angle)"@en . "milliarcsecond"@en . "The millisecond (angle) is a unit of length defined as 1.0e-3 second (angle). Used in astronomy (measurements of positions of stars, galaxies, etc.) to represent the error."@en . "milliseconde (hoek)"@nl . "millisecond of arc"@en . . "milliboogseconde"@nl . . . "mas" .