"in the absence of," 1944, principally from U.S. legal use, from absent (adj.).

amphibious assault vehicle, 1944, contraction of amphibious tractor (n.).

1944, from a specialized use in psychology of German Angst "neurotic fear, anxiety, guilt, remorse," from Old High German angust, from Proto-Germanic *angustu- (source also of Old Frisian ongost, Old High German angust, Middle Dutch ancst "fear," also Old English enge, Old Saxon engi, Gothic aggwus "narrow"), from PIE *anghosti-, suffixed form of root *angh- "tight, painfully constricted, painful." Compare anger.

George Eliot used it (in German) in 1849, and it was popularized in English early 20c. by translation of Freud's work, but as a foreign word until 1940s. Old English had a cognate word, angsumnes "anxiety," but it died out.

1944, from bebop, rebop, bop, nonsense words in jazz lyrics, attested from at least 1928. The style is associated with Charlie Parker and Dizzy Gillespie.

"having large breasts," 1944, from bust (n.1) in the "bosom" sense + -y (2). Related: Bustiness.

also check-out, 1944, from the verbal phrase; see check (v.1) + out (adv.). Originally "training given to a pilot for using a specific aircraft;" the hotel sense of "administrative procedure followed when guests leave after a stay" is from 1958. Retail sense of "place where one pays for goods selected" is from 1947.

1944, from cortico-, combining form of corticoid, + steroid. So called because they are produced in the adrenal cortex. Related: Corticosterone.

also co-sign, "to sign (a document) along with another or others," by 1944, from co- + sign (v.). Related: Cosigned; cosigning.

1944, in reference to the Holocaust, probably translating German Todeslager; they also were known as extermination camps (German Vernichtungslager); historians usually count six of them: Auschwitz-Birkenau, Chełmno, Bełżec, Majdanek, Sobibór, Treblinka.

"detachment of Nazis from their allegiance; removal of Nazis from official position," 1944, from de- + Nazi + -fy. Related: Denazified; denazifying.