Sine pausa (without pause) refers to the fact that several voices, which are involved in canonic or stretto constructions, produce a simultaneous start of the same motif, theme or fugal subject, whether or not at different pitch levels, in inversion or including different rhythmic proportions.
See also stretto.
Select Bibliography
Demeyere, Ewald. Johann Sebastian Bach’s Art of Fugue — Performance Practice Based on German Eighteenth-Century Theory (Leuven: Leuven University Press, 2013).