Qeexid
"(-aayo, m.l) (jool.)Mid ka mid ah qaybaha waaweyn ee taxanaha waqtiga jiyoolojiyeed (ee ka dambeeya kambiriyanka horreeyaha). Waaga, laf ahaantiisa waxaa loo kala aqoonsanyihiin saddex waa - aaliyo - soyik, mesosoyik iyo saynsoyik, kuwaas oo ku fidsan ilaa 6 (lix) milyan sano ee la soo dhaafay."