Batrachian is a term used to describe a group of animals that includes frogs, toads, and amphibians. Frogs and toads are both members of the batrachian family, and they are both four-letter words. Amphibians are also part of the batrachian family, and they are nine-letter words. Batrachians are characterized by their ability to live both in water and on land, and they have moist, permeable skin.