Rodentia is an order of mammals also known as rodents, characterized by two continuously-growing incisors in the upper and lower jaws which must be kept short by gnawing. Common rodents include mice, rats, squirrels, chipmunks, gophers, porcupines, beavers, hamsters, gerbils, guinea pigs, chinchillas.odentia is an order of mammals also known as rodents, characterized by two continuously-growing incisors in the upper and lower jaws which must be kept short by gnawing. Common rodents include mice, rats, squirrels, chipmunks, gophers, porcupines, beavers, hamsters, gerbils, guinea pigs, chinchillas.
GEST n (in Britain) acronym for Grants for Education, Support and Training: money allocated to Local Education Authorities by the central government
Symbol Ge. A brittle crystalline gray-white metalloid element, used as a semiconductor and in certain optical glasses. Atomic number 32; atomic weight 72.61; melting point 938.25Â°C; boiling point 2,830Â°C; specific gravity 5.323 (at 25Â°C); valence 2, 4.