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Adjective: gibbous  gi-bus
  1. Characteristic of or suffering from kyphosis, an abnormality of the vertebral column
    - crookback, crookbacked, humped, humpbacked, hunchbacked, kyphotic
  2. (used of the moon) more than half full
    - gibbose

See also: bulging, convex, unfit

Encyclopedia: Gibbous