[adjective] [not gradable]She nursed her dying (= very ill and likely to die soon) husband for months.Dying means happening at the time someone dies, or connected with that time.Beethoven's dying words are said to have been "I shall hear in heaven".I'll remember your kindness to/until my dying day (= as long as I live).A dying tradition/industry is one which is becoming noticeably less common or important.
DYING
Meaning of DYING in English
Cambridge English vocab. Кембриджский английский словарь. 2012