sigmoid vs twisted

sigmoid

adj
  • Relating to the sigmoid colon. 

  • Exhibiting logistic growth; having a graph that accelerates until it reaches a carrying capacity. 

  • Curved in two directions, like the letter "S", or the Greek ς (sigma); having a serpentine shape. 

twisted

adj
  • Wound spirally. 

  • Mentally disturbed or unsound. 

  • Contorted. 

  • Under the influence of multiple intoxicants, usually alcohol and marijuana. 

How often have the words sigmoid and twisted occurred in a corpus of books? (source: Google Ngram Viewer )