class consisting of amphibians (cold-blooded vertebrate animal able to life both on land and water)
Search Dictionary
Amphibia Definition from Arts & Humanities Dictionaries & Glossaries
Amphibia Definition from Language, Idioms & Slang Dictionaries & Glossaries
(pl. )
of Amphibium
of Amphibium
(n. pl.)
One of the classes of vertebrates.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. AboutOne of the classes of vertebrates.
amphibia
\am*phib"i*a\ (&?;), n. pl. [see amphibium.] (zo?l.) one of the classes of vertebrates.
note: the amphibia are distinguished by having usually no scales, by having eggs and embryos similar to those of fishes, and by undergoing a complete metamorphosis, the young having gills. there are three living orders: (1) the tailless, as the frogs (anura); (2) the tailed (urodela), as the salamanders, and the siren group (sirenoidea), which retain the gills of the young state (hence called perennibranchiata) through the adult state, among which are the siren, proteus, etc.; (3) the cœcilians, or serpentlike amphibia (ophiomorpha or gymnophiona), with minute scales and without limbs. the extinct labyrinthodonts also belonged to this class. the term is sometimes loosely applied to both reptiles and amphibians collectively.
similar words(1)
rorippa amphibia
Noun
1. frogs; toads; newts; salamanders; caecilians
(synonym) class Amphibia
(hypernym) class
(member-holonym) Vertebrata, subphylum Vertebrata, Craniata, subphylum Craniata
(member-meronym) amphibian
Amphibia Definition from Encyclopedia Dictionaries & Glossaries
Amphibians are members of the class Amphibia, a group of vertebrates whose living forms include frogs, toads, salamanders, newts and caecilians. They are characterized as non-amniote, ectothermic tetrapods, meaning their eggs are not surrounded by membranes, they are cold-blooded, and they have four limbs. Most amphibians lay their eggs in water and the larvae undergo metamorphosis from a juvenile form with gills to an adult air-breathing form with lungs. Some, however, are paedomorphs that retain the juvenile water-breathing form throughout life. Mudpuppies and olms are examples of this, retaining juvenile gills into adulthood. Adult amphibians also use their skin for respiration.
| See more at Wikipedia.org... |
