word-forming element used in science to mean "twisted," from Latinized combining form of Greek streptos "twisted, easy to bend, pliant," verbal adjective of strephein "to turn, twist," from PIE root *streb(h)- "to wind, turn."
strength
strengthen
strenuous
strep
Strephon
strepto-
streptococcus
streptomycin
stress
stressful
stressor