subframe noun3 •A structural component of a vehicle, such as an automobile or aircraft, that uses a discrete, separate structure within a larger body-on-frame or unit body to carry certain components, such as the engine, drivetrain, or suspension.In the rebuilding no alterations have been made to the queen-post underframes except to add the subframe carrying the engine-transmission group. — 1958 •(Internet) One of the HTML frames that make up a frameset.Specify the dimensions of your main frame and subframes and this online utility will create them for you. — 1998 •A subsidiary frame (chunk of data).Four status bits accompany each subframe. — 2001 formssubframes
