Definitions

1. noun

a child or set of children born at the same time to the same mother, six in number

“The Sextuplets were born after 15 minutes of each other and the family received widespread media attention.”

2. noun

a set of six genetically identical individuals, such as frogs or fruit flies, produced in the same laboratory experiment

“The scientist studied the development of the sextuplet frogs in her laboratory.”