In the context of slot machines, the "denomination" means the value of each credit wagered on a particular slot machine. It's essentially the monetary value that each coin or credit in the game is worth.
For example, in a one-cent denomination slot, each credit wagered is worth one cent. In a one-dollar denomination slot, each credit is worth one dollar.
Slot machines can often be adjusted to different denominations, allowing players to wager more or less depending on their preference. Higher denomination machines typically offer higher payout ratios, but they also require a larger investment per spin. Conversely, lower denomination slots allow for longer play times and more spins for a given bankroll, but the potential payouts are smaller.
Always remember to check the denomination before playing a slot machine, as it directly impacts the cost per spin and potential payouts.