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WordReference Random House Unabridged Dictionary of American English © 2024tet•ra•pod (te′trə pod′),USA pronunciation n. - Biology, Zoologyany vertebrate having four limbs or, as in the snake and whale, having had four-limbed ancestors.
- an object, as a caltrop, having four projections radiating from one central node, with each forming an angle of 120° with any other, so that no matter how the object is placed on a relatively flat surface, three of the projections will form a supporting tripod and the fourth will point directly upward.
adj. - Biologyhaving four limbs or descended from four-limbed ancestors.
- Greek tetrapod- (stem of tetrápous) four-footed. (see tetra-, -pod) + Neo-Latin -us adjective, adjectival suffix
- Neo-Latin tetrapodus
- 1820–30
Collins Concise English Dictionary © HarperCollins Publishers:: tetrapod /ˈtɛtrəˌpɒd/ n - any vertebrate that has four limbs
- Also called: caltrop a device consisting of four arms radiating from a central point, each at about 109° to the others, so that regardless of its position on a surface, three arms form a supporting tripod and the fourth is vertical
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