2009, Lixin Wu, “Volatility and Correlation Adjustments”, in Interest Rate Modeling: Theory and Practice, CRC Press, →ISBN, page 284:
[…] each piece of cash flows of a CMS swap (a so-called swaplet) […]
2012, Howard Corb, “Caps and Floors”, in Interest Rate Swaps and Other Derivatives, Columbia University Press, →ISBN, page 137:
[…] the payout […] is equal to the cash flow in an individual period resulting from paying fixed in a swap (known as a swaplet).
2016, Jan W. Dash, “Interest-Rate Swaps”, in Quantitative Finance and Risk Management: A Physicist's Approach, 2nd edition, World Scientific, →ISBN, page 96:
The "swaplets" are the components of the swap and are discussed below.