The phrase "a single installment" is correct and usable in written English.
It can be used when referring to one part of a payment plan or a series of payments.
Example: "You can choose to pay for the service in a single installment instead of multiple payments."
Alternatives: "one payment" or "a lone payment".
Long-term contracts present two different issues, the breach of a single installment and the anticipatory repudiation of a contract with many years yet to run.
Finland was later granted a collateral plan but only for 20 percent of its share of the bailout (€1.44 billion [about $2 billion]), which the Finns were required to pay in a single installment.
In 2007 it will show nearly 100 episodes of new animation, a considerable feat given that a single installment of "SpongeBob" or his peers typically takes about nine months to produce.
Group 1 was treated with MTX dissolved in PBS at a dose of 1 mg/kg/week, administered intraperitoneally in a single installment.
The worst-case performances of the algorithms are derived for two cases: single installment on a single-level tree and multiple installments on a bus network.
For his efforts, Martínez was paid a million dollars a year, in a single annual installment: "In cash, in a suitcase, each December".
For the first time since summer blockbuster season began in May, not a single franchise installment or well-trod adaptation opened this weekend.
"The one thing we're trying to do with Black Mirror is make every single installment of it different to the last installment you saw".
With the release of its direct sequel and every single installment up until the launch of the PlayStation 4 and Xbox One, the Call of Duty franchise quickly propelled into the fastest and best selling video game franchise of the seventh generation of video games.
The premium for the entire household is paid in one single installment, at the beginning of the year, after the harvest.
This Whitman-style romance is fulfilling for many, but it leaves out those who are uncomfortable with the idea of sexual encounters coming in single installments.
