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Webster 1828 Edition

Noun.

[L. expuo for exspuo.] A discharge of saliva by spitting.

expuition ‎(plural expuitions)

(obsolete) The act of spiting phlegm.
- 1823, John Mason Good, The Study of Medicine, volume 1, page 380:
  […] so in asthma, where there is no expuition, or the expuition does not appear till the paroxysm is subsiding, we ought, I think, in fair reason, rather to acknowledge or inacquaintance with the actual cause than to place our faith in one that has so little to support it.