Dictionary Meaning and Definition on 'Turtle'
n : any of various aquatic and land reptiles having a bony shell
and flipper-like limbs for swimming
- overturn accidentally; "Don't rock the boat or it will capsize!" [syn: capsize, turn turtle]
- hunt for turtles, especially as an occupation
- Turtle \Tur"tle\, n. [AS. turtle, L. turtur; probably of
imitative origin. Cf. Turtle the sea tortoise.] (Zo["o]l.)
- Turtle \Tur"tle\, n. [Probably the same word as the word
preceding, and substituted (probably by sailors) for the
Spanish or Portuguese name; cf. Sp. tortuga tortoise, turtle,
Pg. tartaruga, also F. tortue, and E. tortoise.]
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Wikipedia Meaning and Definition on 'Turtle'
Cryptodira Pleurodira and see text
Turtles are reptiles of the order Testudines (the crown group of the superorder Chelonia), characterised by a special bony or cartilaginous shell developed from their ribs that acts as a shield. "Turtle" may either refer to the Testudines as a whole, or to particular Testudines which make up a form taxon that is not monophyletic—see also sea turtle, terrapin, tortoise, and the discussion below.
The order Testudines includes both extant (living) and extinct species. The earliest known turtles date from 215 million years ago,
Like other reptiles, turtles are ectotherms—varying their internal temperature according to the ambient environment, commonly called cold-blooded. However, leatherback sea turtles have noticeably higher body temperature than surrounding water because of their high metabolic rate.[See more about Turtle at Dictionary 3.0 Encyclopedia]
Words and phrases related to 'Turtle'
'Turtle' in famous quotation sentence
* A turtle with no legs tends not to go anywhere. - J & A Foundation
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