from
The Collaborative International Dictionary of English v.0.48
Interjectional \In`ter*jec"tion*al\, a.
1. Thrown in between other words or phrases; parenthetical;
ejaculatory; as, an interjectional remark.
[1913 Webster]
2. Pertaining to, or having the nature of, an interjection;
consisting of natural and spontaneous exclamations.
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Certain of the natural accompaniments of
interjectional speech, such as gestures, grimaces,
and gesticulations, are restrained by civilization.
--Earle.
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