di-

Usage

• dilemma

  A dilemma is a difficult choice between two equal alternatives.

• dioxide

  an oxide containing two atoms of oxygen in the molecule

• diphthong

  a vowel sound that starts near the articulatory position for one vowel and moves toward the position for another

• diploma

  a document certifying the successful completion of a course of study

• diplomat

  an official engaged in international negotiations

• diplomatic

  relating to or characteristic of diplomacy