Defn: The act of swearing solemnly. [Obs.] Bp. Hall.

DEJEUNE
Dé`jeu`né", n. Etym: [F.]

Defn: A déjeuner.
Take a déjeuné of muskadel and eggs. B. Jonson.

DEJEUNER Dé`jeu`ner", n. Etym: [F. déjeuner breakfast, as a verb, to breakfast. Cf. Dinner.]

Defn: A breakfast; sometimes, also, a lunch or collation.

DE JURE
De` ju"re. Etym: [L.]

Defn: By right; of right; by law; — often opposed to be facto.

DEKA-
Dek"a-. (Metric System)

Defn: A prefix signifying ten. See Deca-.

DEKABRIST
Dek"a*brist, n.