> as lemmas

a1771 J. Bate New Transl. Pentateuch & Hist. Bks. Old Test. (1773) (Exod. viii. 3) They [sc. sting-flies] shall come up, and go into thy house,..and into thy leavening troughs.

1829 Christian Baptist (Va.) 5 May 230 He has treated the rebellious and refractory nation of the Jews as a woman would a bowl of meal set down by the fireside, with the leaven in it, and turned, and warmed, and tended, until the leavening process has commenced.

1878 R. T. Colburn Salt-eating Habit 11 The consumption of quantities of soda, potash and their various combinations under the name of ‘baking’ or leavening powders.

1882 W. R. S. Ralston tr. Tibetan Tales vi. 96 Halfway back he met a herd-girl, who was carrying a jug of curdled milk and a leavening pot.

1895 Argosy Nov. 129/1 In the crowd of boys waiting for their papers..one could almost fancy that some unseen hand had placed a leavening agent in the mass, which had caused it to effervesce.

a1944 G. W. Norris Fighting Liberal (1945) xxxviii. 406 There must be room in a successful democracy for differences of opinion. It is the true leavening process which produces the best flower of thought.

1981 Cook's Mag. Mar. 58/2 Flour is the most vital ingredient in quick breads other than the leavening agent.

2002 M. H. B. Sanderson Kindly Place? vii. 85 Girdles are usually listed with baking boards and baking cloths, and the leavening trough or tub.