Obs. rare1. [f. L. flaccēscent-em, pr. pple. of flaccēscĕre to wither, f. flaccēre to be flabby, f. flaccus flabby: see -ENCY.] The quality of becoming flaccid.

1

1664.  Power, Experimental Philosophy, II. 117. The reason of its flaccescency, upon admission of external Ayr, is, because then the Elater of the external Ayr is so strong, that it forces the embladder’d Ayr into its former extension and consistency again.

2

1721–1800.  in Bailey.

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