Definition of "circularization" []

• The distribution of publicity circulars (noun)

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• "Can we assume that the fairing had to separate before a circularization engine could fire?"
• "He outlined the investigation so far; all the man-hours worked by the number of agents, the field offices filling reports—“More arrived even late last night from the Naval Investigative Service in the Philippines”—on the life and times of Ray Cruz; the proactive attempts at apprehension, such as the raid on the house in Baltimore, the nationwide law enforcement circularization of the Cruz photo and particulars."
• "Given that an orbit circularization burn was scheduled for 5:44 EDT that afternoon, the astronauts were in no mood for a television performance; in fact, as Neil made clear to Mission Control, if they had their druthers, they would not have had a TV show then at all."