Definition of 自動膨張式 (じどうぼうちょうしき)
じどうぼうちょうしき
                        自動膨張式
じどうぼうちょうしき
jidoubouchoushiki
noun
•
        
self-inflating
Related Kanji
| 自 | oneself | 
| 動 | move, motion, change, confusion, shift, shake | 
| 膨 | swell, get fat, thick | 
| 張 | lengthen, counter for bows & stringed instruments, stretch, spread, put up (tent) | 
| 式 | style, ceremony, rite, function, method, system, form, expression |