The upper or outer lip, especially in reference to the lip-like structure of certain botanical or anatomical formations.
From Greek epi- (upon, over) + cheilos (lip). The term is primarily used in botanical and anatomical contexts to describe structures positioned at or above the lip.
Orchids have an epichil—the top petal-like part of their flower—and it's often the showiest, most colorful part designed to attract insects. Plant structures that look like lips are actually some of the cleverest evolutionary adaptations for pollination.
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