JEDEC – no definition offered

TI – The capacitance of an input/output (I/O) terminal of the device with the input conditions applied that, according to the product specification, establishes the high-impedance state at the output.

This parameter is the internal capacitance encountered at an input/output (I/O) of the device.  The values that are given are not production-tested values. Normally, they are typical values given for the benefit of the designer. These values are established by the design, process, and package of the device.