[ te-truh-pod ]
/ ˈtɛ trəˌpɒd /
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.
having four limbs or descended from four-limbed ancestors.
TAKE THIS QUIZ TO SEE WHAT YOU KNOW ABOUT HIGH SCHOOL PUNCTUATION!
Commas mark divisions in sentences. Periods end declarative sentences. Apostrophes show possession. Easy, right? Well, punctuation can get pretty tricky—fast. Think you got what it takes to be a punctuation expert? Take our quiz to prove it!
Question 1 of 10
Which of the options below is the best punctuation for the sentence? It__s your turn to pick the movie __ but your sister gets to pick the board game we _ re going to play.
Its your turn to pick the movie but your sister gets to pick the board game we’re going to play.
It’s your turn to pick the movie but your sister gets to pick the board game were going to play.
It’s your turn to pick the movie, but your sister gets to pick the board game we’re going to play.TAKE THE QUIZ TO FIND OUT
Words nearby tetrapod
Dictionary.com Unabridged Based 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.
British Dictionary definitions for tetrapod
/ (ˈtɛtrəˌpɒd) /
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
[ 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.