transcription, транскрипция: [ hī-ˈdräk-sə-lə-ˌmēn, ˌhī-ˌdräk-ˈsi-lə-ˌmēn ]
noun
Etymology: International Scientific Vocabulary
Date: 1869
: a colorless odorless nitrogenous base NH 3 O that resembles ammonia in its reactions but is less basic and that is used especially as a reducing agent