1. unblocking - Noun
2. unblocking - Verb
unblocking
present participle of unblock
unblocking (plural unblockings)
The process by which something is unblocked.
This can be done by unblocking a driver task through releasing a semaphore, setting a flag or sending a message. Source: Internet
When the Sun's position is 90 degree from the barycenter relative to Earth, it would come close to "unblocking" from view a planet 180 degrees from Earth, enough to reveal the aforementioned hypothetical signature. Source: Internet