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Undulation

From Biology-Online Dictionary
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Definition

noun, plural: undulations

(biology) The type of motion characterized by wave-like movement patterns, propelling the organism forward.

(general) Wavy in appearance or outline.


Supplement

In biology, undulation is displayed by the crawling of snakes or swimming of lampreys. This form of locomotion is employed usually by limbless animals.


Variant: undulatory locomotion