1. stretch reflex reflex contraction of a muscle when an attached tendon is pulled; important in maintaining erect posture
  2. streamline flow flow of a gas or liquid in which the velocity at any point is relatively steady
  3. startle reflex a normal reflex of young infants
  4. detrimental causing harm or injury
  5. streamer fly an artificial fly that has wings extending back beyond the crook of the fishhook
  6. Strymon melinus larvae are pests of various economic plants
  7. streaming the circulation of cytoplasm within a cell
  8. radiant flux the rate of flow of radiant energy (electromagnetic waves)
  9. instrument flying navigation of an airplane solely by instruments
  10. bastard toadflax woody creeping parasite of western North America having numerous thick powdery leaves and panicles of small dull-white flowers
  11. tremendous extraordinarily large in extent or amount or power
  12. state of flux a state of uncertainty about what should be done (usually following some important event) preceding the establishment of a new direction of action
  13. stream orchid orchid growing along streams or ponds of western North America having leafy stems and 1 greenish-brown and pinkish flower in the axil of each upper leaf
  14. storm window a window outside an ordinary window to protect against severe weather or winter
  15. star magnolia deciduous shrubby magnolia from Japan having fragrant white starlike flowers blooming before leaves unfold; grown as an ornamental in United States
  16. streamlet a small stream
  17. streamline contour economically or efficiently
  18. neutron flux the rate of flow of neutrons
  19. tremendously extremely
  20. streamlined made efficient by stripping off nonessentials