tailless aircraft; tail-less airplane
Technical term in aviation for an aircraft without a horizontal tail surface, such as a flying wing or delta-wing design.
A tailless aircraft is a general term for an airplane without a horizontal tail.
全翼機 (flying wing) is a specific type of 無尾翼機 where the entire aircraft is a wing, whereas 無尾翼機 includes any design lacking a horizontal tail, such as delta-wing aircraft.
Compound of 無 (mu, 'without') + 尾翼 (biyoku, 'tailplane') + 機 (ki, 'aircraft').