DEVITATION
Dev`i*ta"tion, n. Etym: [L. devitatio.]

Defn: An avoiding or escaping; also, a warning. [Obs.] Bailey.

DEVITRIFICATION
De*vit`ri*fi*ca"tion, n.

Defn: The act or process of devitrifying, or the state of being devitrified. Specifically, the conversion of molten glassy matter into a stony mass by slow cooling, the result being the formation of crystallites, microbites, etc., in the glassy base, which are then called devitrification products.

DEVITRIFY
De*vit"ri*fy, v. t.

Defn: To deprive of glasslike character; to take away vitreous luster and transparency from.

DEVOCALIZE
De*vo"cal*ize, v. t.

Defn: To make toneless; to deprive of vowel quality. — De*vo`cal*i*za"tion, n. If we take a high vowel, such as (i) [= nearly i of bit], and devocalize it, we obtain a hiss which is quite distinct enough to stand for a weak (jh). H. Sweet.

DEVOCATION Dev`o*ca"tion, n. Etym: [L. devocare to call off or away; de + vocare to call.]

Defn: A calling off or away. [R.] Hallywell.