tetrapod

[ te-truh-pod ]

/ ˈtɛ trəˌpɒd /

noun

any 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.

adjective

having four limbs or descended from four-limbed ancestors.

Origin of tetrapod

1820–30; <New Latin tetrapodus<Greek tetrapod- (stem of tetrápous) four-footed. (see tetra-, -pod) + New Latin -us adj. suffix

Words nearby tetrapod

tetraparesis, tetrapeptide, tetrapetalous, tetraplegia, tetraploid, tetrapod, tetrapody, tetrapterous, tetrapylon, tetrarch, tetrasaccharide

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for tetrapod

Contributions to the question of the origin of the tetrapod limb.
The Ancestry of Modern Amphibia: A Review of the Evidence|Theodore H. Eaton
Tetrapod, tet′ra-pod, n. an insect distinguished by having but four perfect legs.
Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements)|Various

British Dictionary definitions for tetrapod

tetrapod

/ (ˈtɛtrəˌpɒd) /

noun

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

engineering a very large cast concrete structure of a similar shape piled in large numbers round breakwaters and sea defence systems to dissipate the energy of the waves

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for tetrapod

tetrapod

[ tĕt′rə-pŏd′ ]

Having four feet, legs, or leglike appendages.

Any of various mostly terrestrial vertebrates that breathe air with lungs. Most tetrapods have two pairs of limbs, though some, such as whales and snakes, have lost one or both pairs. Tetrapods include the amphibians, reptiles, birds, mammals, and various extinct groups, and evolved from lobe-finned fish during the late Devonian Period. Tetrapods are classified according to the structure of their skull into anapsids, diapsids, and synapsids.

单词	tetrapod
释义	tetrapod [ te-truh-pod ] / ˈtɛ trəˌpɒd / noun any 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. adjective having four limbs or descended from four-limbed ancestors. Origin of tetrapod 1820–30; <New Latin tetrapodus<Greek tetrapod- (stem of tetrápous) four-footed. (see tetra-, -pod) + New Latin -us adj. suffix Words nearby tetrapod tetraparesis, tetrapeptide, tetrapetalous, tetraplegia, tetraploid, tetrapod, tetrapody, tetrapterous, tetrapylon, tetrarch, tetrasaccharide Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for tetrapod Contributions to the question of the origin of the tetrapod limb. The Ancestry of Modern Amphibia: A Review of the Evidence\|Theodore H. Eaton Tetrapod, tet′ra-pod, n. an insect distinguished by having but four perfect legs. Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements)\|Various British Dictionary definitions for tetrapod tetrapod / (ˈtɛtrəˌpɒd) / noun 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 engineering a very large cast concrete structure of a similar shape piled in large numbers round breakwaters and sea defence systems to dissipate the energy of the waves Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for tetrapod tetrapod [ tĕt′rə-pŏd′ ] Having four feet, legs, or leglike appendages. Any of various mostly terrestrial vertebrates that breathe air with lungs. Most tetrapods have two pairs of limbs, though some, such as whales and snakes, have lost one or both pairs. Tetrapods include the amphibians, reptiles, birds, mammals, and various extinct groups, and evolved from lobe-finned fish during the late Devonian Period. Tetrapods are classified according to the structure of their skull into anapsids, diapsids, and synapsids. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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