3. (Physics)

Defn: That can note be confined in, or excluded from, vessels, like ordinary fluids, gases, etc.; — said of the imponderable fluids, heat, light, electricity, etc.

INCOEXISTENCE
In`co*ex*ist"ence, n.

Defn: The state of not coexisting. [Obs.] Locke.

INCOG
In*cog", adv.

Defn: Incognito. [Colloq.]
Depend upon it — he'll remain incog. Addison.

INCOGITABLE In*cog"i*ta*ble, a. Etym: [L. incogitabilis; pref. in- not + cogitabilis cogitable.]

Defn: Not cogitable; inconceivable. Sir T. More.

INCOGITANCE; INCOGITANCY
In*cog"i*tance, In*cog"i*tan*cy, n. Etym: [L. incogitantia.]

Defn: Want of thought, or of the power of thinking; thoughtlessness; unreasonableness. 'T is folly and incogitancy to argue anything, one way or the other, from the designs of a sort of beings with whom we so little communicate. Glanvill.