From the same last name, “tarmac” is a shortening of tarmacadam, from tar + macadam; the latter named for John Loudon McAdam. https://en.m.wikipedia.org/wiki/Ma

From the same last name, “tarmac” is a shortening of tarmacadam, from tar + macadam; the latter named for John Loudon McAdam. https://en.m.wikipedia.org/wiki/Macadam https://en.m.wikipedia.org/wiki/Macadam