• Webster's Revised Unabridged Dictionary
    • a Pennaceous pĕn*nā"shŭs (Zoöl) Like or pertaining to a normal feather.
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Century Dictionary and Cyclopedia
    • pennaceous In ornithology, having the structure of a penna or contour-feather; not plumulaceous.
    • pennaceous In entomology, resembling the web of a feather; having fine, close, parallel lines springing diagonally from a single line: applied to color-marks and sculpture.
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In news:

Screenwriter Daniel Pennac brings the popular children's book of the same name about two unlikely friends to the big screen.