[ adj ]
that is passing through
<adj.ppl>
transpiring gas

Transpire \Tran*spire"\, v. i. [imp. & p. p. {Transpired}; p.
pr. & vb. n. {Transpiring}.] [F. transpirer; L. trans across,
through + spirare to breathe. See {Spirit}.]
1. (Physiol.) To pass off in the form of vapor or insensible
perspiration; to exhale.

2. (Bot.) To evaporate from living cells.

3. To escape from secrecy; to become public; as, the
proceedings of the council soon transpired.

The story of Paulina's and Maximilian's mutual
attachment had transpired through many of the
travelers. --De Quincey.

4. To happen or come to pass; to occur.

Note: This sense of the word, which is of comparatively
recent introduction, is common in the United States,
especially in the language of conversation and of
newspaper writers, and is used to some extent in
England. Its use, however, is censured by critics of
both countries.