DATIVE
Da"tive, n. Etym: [L. dativus.]
Defn: The dative case. See Dative, a.,
1.
DATIVELY
Da"tive*ly, adv.
Defn: As a gift. [R.]
DATOLITE Dat"o*lite, n. Etym: [From. Gr. to divide + -lite; in allusion to the granular structure of a massive variety.] (Min.)
Defn: A borosilicate of lime commonly occuring in glassy,, greenish crystals. [Written also datholite.]
DATUM
Da"tum, n.; pl. Data. Etym: [L. See 2d Date.]
1. Something given or admitted; a fact or principle granted; that upon which an inference or an argument is based; — used chiefly in the plural. Any writer, therefore, who . . . furnishes us with data sufficient to determine the time in which he wrote. Priestley.
2. pl. (Math.)