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Use "concentrical" in a sentence
""The concentrical circles of the long-leaf pine (p. australis) are twelve times as numerous in the same space" [as of the loblolly pine]."
"The crystal sphere of thought is as concentrical as the geological structure of the globe."
"Aristotle's wheel paradox: Rolling joined concentrical wheels seem to trace the same difference with their circumferences, even though the circumferences are different."