"Quadruplets" Natural Recordings by Native Speakers
Quadruplets are the simultaneous birth of four babies from the same pregnancy. The term can also refer to any group of four items or pairing the same thing together, but the common usage primarily pertains to the biological context.
The word "quadrupled" is the past tense of the verb "quadruple", which means to increase something by a factor of four, or to become four times as much. It can also be used as an adjective to describe something that has been multiplied by four.<br><br>Example: "The company's profits quadrupled last year due to a successful marketing campaign."