exhālātĭo, ōnis, f. [exhalo],
an exhalation , vapor (class.): exhalationes terrae, Cic. Tusc. 1, 19, 43; Sen. Q. N. 2, 10; Plin. 31, 3, 27, § 44; Pall. 1, 7, 4.
exhālātiō ōnis, f exhalo, an exhalation, vapor : exhalationes terrae. ...
An Elementary Latin Dictionary