There is 118 ridges on a dime.
According to the US Mint, a dime has 118 reeds/ridges.
A US dime(10 cents) has 118 ridges to be exact.
They are actually called "Reeds" and the dime has 118 of them.
there are 118 ridges on a u.s. dime
118
The ridges around the edge of a dime is called reeding or milling. There are 118 ridges.
118 ridges are on a dimes edge
The United States dime (10 cents) has 118 edge ridges. The coin is 17.91 mm in diameter and is 1.35 mm thick
180 to be exact. found it in my adgenda
An American quarter has 119 ridges. Believe it or not, a dime has 118 ridges- that's only one more ridge!
The number of ridges around the edge of a dime is 118. These ridges, also known as reeding, help prevent counterfeiting and wear on the coin. The design and number of ridges can vary among different coins, but for the U.S. dime, it is consistently 118.
118 seems to be the consensus on the web.