Gibbous

Definition of Gibbous

When someone says the moon is gibbous, it means that more than 50% of the moon is illuminated in the sky. This happens when the moon is moving towards a full moon and after the full moon when we are approaching a new moon.

TERM OF THE DAY

Full Moon

When the entire face of the moon is visible from Earth, opposite the sun and unobstructed from Earth's shadow, it is considered a full moon. A full moon occurs approximately every 29 days. 

Read the full Full Moon definition