dia : Idioms & Phrases

• noun Portuguese explorer who in 1488 was the first European to get round the Cape of Good Hope (thus establishing a sea route from the Atlantic to Asia) (1450-1500)
  Bartholomeu Diaz; Diaz; Dias.
  

WordNet

Di"a-, Di- (Also<

• Dia-
• Di-

)

Etymology

Gr. through; orig., dividing into two parts; akin to two. See Two, and cf. 1st Di-.

Definitions

1. A prefix denoting through; also, between, apart, asunder, across. Before a vowel dia- becomes di-; as, diactinic; dielectric, etc.

Webster 1913