transcription, транскрипция: [ in-ˌves-tə-ˈgā-shnəl, -shə-n ə l ]
adjective
Date: 1905
1. : of or relating to investigation
investigational activities
2. : relating to or being a drug or medical procedure that is not approved for general use but is under investigation in clinical trials regarding its safety and efficacy
an investigational new drug