protractive

adjective3

1. •
   Drawing out or lengthening in time; prolonging; continuing or delaying.

   • He suffered their protractive arts. — 1687
2. •
   Indicating an action or state that is ongoing or sustained.

   • The protractive, durational, and continuative morphemes are examples of nonpunctual modifications . — 1990
3. •
   Extending forward or projecting outward.

   • Axial ribs not strongly protractive. — 1888