There are multiple definitions:

1. contact time(English)

   • temporal parameter referring to kinematics of foot
   • tg, FEA, FSA, tf, ts
   • Musculoskeletal system, Biophysics
   • https://doi.org…hys.2022.814172

2. transcriptionally competent(English)

   • CCHF, CCHFV, IFNAR, VLP
   • Transcription
   • https://doi.org…28/JVI.02076-16