Word of the Day - December 15, 2025
GIBBOUS
- (of a heavenly body) convex at both edges, as the moon when more than half full
- (of a heavenly body) convex at both edges, as the moon when more than half full.
- having a hump on the back
- irregularly rounded [adj]
- irregularly rounded, also GIBBOSE [adj]
- is most often used to describe a moon or planet that is seen with more than half, but not all, of the apparent disk illuminated.
- is most often used to describe the moon or a planet when it is seen with more than half but not all of the apparent disk illuminated.
- marked by convexity or swelling.
