The phrase "additional slot" is correct and usable in written English.
It can be used when referring to an extra position, space, or opportunity available for something, such as a booking, appointment, or resource allocation.
Example: "We have opened an additional slot for appointments this week to accommodate more clients."
Alternatives: "extra slot" or "supplementary slot".
The governor of Delaware wants additional slot machines at racetracks.
'We're putting in restaurants and retail and additional slot machines,' said chief financial officer Harry Hagerty.
The additional slot (worth about $5.8 million), which can be used every year, would replace the biannual exception (worth about $2.1 million).
When Mr. Cuomo announced his goal to legalize full-scale casino gambling, he outlined Genting's proposal to build a $4 billion convention center at Aqueduct, with 3,000 hotel rooms and additional slot machines.
An additional slot near the feed point for minimizing the return loss S11 at 2.9 GHz is proposed.
The CBX-Z1 is actually more of a plane jane tabletop radio+CD player than a "straight up" speaker+dock, just with an additional slot for your iPod.
The strip for inhalant allergens contained three additional slots with bromelain, horseradish peroxidase and ascorbate oxidase in addition to extracts from various pollens.
The new freedom ANA has won to fly to the United States is next to useless without additional slots at Japan's leading airport.
When asked whether a moratorium had been declared, the Health Department said, "In 1998, the department decided that it would no longer approve additional slots in the adult day care program".
As FIFA president, Infantino declared that one of his aims was to increase the number of World Cup teams to 40, including two additional slots for Africa, thus continuing his support of the less-prominent soccer countries.
Flows preserving error-free channel can get additional slots from lagging flows to forward its packets.
