Occurring at two different times or having two distinct time periods, especially used in geology or biology to describe phenomena that happen in separate temporal phases.
From Greek 'di-' (two) + 'chronos' (time) + '-ous' (adjective suffix). This rare term developed in scientific literature to describe processes with two distinct temporal stages.
A dichronous species migration might happen at two separate seasons—some populations moving in spring, others in fall—which can confuse scientists studying when animals really travel!
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