Node A6 · Acronym decoder
ICD
Interface Control Document
What it actually means
The document that nails down an interface between two system elements — signals, connectors, protocols, timing, tolerances — so the teams on each side can build independently and integrate successfully. In DoD requirements circles the same letters mean Initial Capabilities Document, the JCIDS document that opens an acquisition; context disambiguates.
Where you'll meet it
Integration planning, interface control working groups, and the JCIDS document tree.