Third-person singular simple present indicative form of undock.(verb)
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Use "undocks" in a sentence
"I can't wait to see the shots after Discovery undocks and gets a good full view of it and I also can't wait for it to be fully crewed like Ben said and bustling with experiments."
"Discovery undocks from the space station Sunday for the two-day journey home."
"The detailed images of the Endeavour's heat shield were analyzed on Wednesday and showed that everything looked "nominal" in NASA speak, and that no further examinations are required until after the shuttle undocks with the ISS."