| 释义 | chrono·se·mic \| ̷ ̷ ̷ ̷ at chrono-+|sēmik\ adjective
 Etymology: chron- + Greek sēma sign + English -ic — more at semantics
 : employing intervals of time with a fixed significance (as in a system of signaling) by exposing visual objects or sounding audible signals for selected intervals of time
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