IPA: /kwɪnˈtjuːplɪt/
KK: /kwɪnˈtʌplɪt/
A person or thing that is one of five born at the same time, or a group of five things that are related in some way.
The quintuplets celebrated their birthday together with a big party.
Quintuplet → It is formed from "quint-" (from Latin "quintus", meaning fifth) and "-plet" (from Latin "plectere", meaning to fold or braid). The word refers to a group of five offspring born at the same time, hence the idea of five being folded together in one birth.
Think of 'quint-' meaning fifth, and '-plet' suggesting a grouping or folding together. This helps you remember that a quintuplet is a set of five born at once.