Another data point, interview with Gozo Shioda ( http://members.aikidojournal.com/pri...h-gozo-shioda/
Q. Did Ueshiba Sensei give names to techniques when he was teaching before the war?
A. He used the term irimi. He said that sokumen irimi and shomen irimi were also kinds of irimi. He would also say things like, "Irimi is the essence of aiki." Certainly other martial arts such as judo do not have iriminage. Maybe he used the names of techniques he was taught by Sokaku Takeda.