Bending forward with the face downward; inclined; lying flat; not erect.
Lying with the face or front downward.
Specifically, in anatomy: Lying face downward; stretched at full length on the belly.
Lying with the palm downward; pronated, as the hand. In both senses, the opposite of supine.
Moving or sloping downward; descending; inclined.
Inclined by disposition or natural tendency; propense; disposed: usually in an ill sense.