> The name is reminiscent of several real high-tech companies, including the Gyrodyne Company of America, Teledyne and Teradyne, all of which were founded a few years before Pynchon wrote The Crying of Lot 49, and Rocketdyne, an aerospace company that manufactured, among other things, propulsion systems.

> The "dyne" is the standard unit of force in the centimetre–gram–second (CGS) system of units, derived from the Greek word dynamis, meaning "power" or "force".

https://en.wikipedia.org/wiki/Yoyodyne