︎price of carbon
n.— «James Cameron, a founder of Climate Change Capital, a merchant bank specialising in emissions trading, told edie that this move would drive down the price of carbon.» —“UK cuts reduction targets in revised NAPS plan” by David Hopkins Environmental Data Interactive Exchange (South Croydon, Surrey, U.K.) May 7, 2004. (source: Double-Tongued Dictionary)
Further reading
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...