Modal
Pronunciation : Mo"dal
Part of Speech : a.
Etymology : [Cf. F. modal. See Mode.]
Definition : 1. Of or pertaining to a mode or mood; consisting in mode or form only; relating to form; having the form without the essence or reality. Glanvill.
2. (Logic & Metaph.)
Defn: Indicating, or pertaining to, some mode of conceiving existence, or of expressing thought.
Source : Webster's Unabridged Dictionary, 1913