单词：siredon
siredon (plural siredons)
(zoology) The larval form of any salamander while it still has external gills, especially one of those which, like the axolotl, sometimes lay eggs while in this larval state, but which under more favourable conditions lose their gills and become normal salamanders.
(zoology) The larval form of any salamander while it still has external gills, especially one of those which, like the axolotl, sometimes lay eggs while in this larval state, but which under more favourable conditions lose their gills and become normal salamanders.