【医】 heterochronia
different; other; separate; strange; surprise
【计】 exclusive-OR
【医】 allotrio-; heter-; hetero-; pecilo-; poecil-; poikilo-
days; hour; occasionally; opportunity; seanson; time
【医】 chron-; chrono-
happen; generate; occur; take place; engender; exist; go forward; go on
originate
【医】 genesis; occurrence