👉 The term "Britax" refers to a type of car seat that allows infants to sit upright, but does not move their bodies. It is commonly used in the U.S. for small children or babies who require certain features or safety measures due to birth defects or conditions like spina bifida. The word "Britax," as used in this context, signifies a particular type of car seat that is designed with advanced safety features and supports, but does not offer full support or maneuverability as compared to other types of car seats.