| DIPHENYLENE | • diphenylene n. Biphenylene. • DIPHENYLENE adj. as in diphenylene diketone, a compound used in dye manufacture. |
| DIPHOSGENES | • DIPHOSGENE n. a liquid compound used as a poisonous gas. |
| DIPHOSPHATE | • diphosphate n. (Chemistry) any salt or ester containing two phosphate groups. • diphosphate n. (Chemistry) any salt or ester of diphosphoric acid; pyrophosphate. • DIPHOSPHATE n. a phosphate containing two phosphate groups. |
| DIPHTHERIAL | • diphtherial adj. Relating to diphtheria. • DIPHTHERIAL adj. relating to diphtheria. |
| DIPHTHERIAS | • diphtherias n. Plural of diphtheria. • DIPHTHERIA n. an infectious throat disease in which the air-passages become covered with a leathery membrane. |
| DIPHTHEROID | • diphtheroid adj. Of, pertaining to or resembling diphtheria. • diphtheroid adj. Of, pertaining to or resembling the diphtheria bacillus Corynebacterium diphtheriae. • diphtheroid n. Any bacterium that can cause diphtheria. |
| DIPHTHONGAL | • diphthongal adj. Pertaining to or characterized by a diphthong. • DIPHTHONGAL adj. of or like a diphthong. |
| DIPHTHONGED | • DIPHTHONG v. to pronounce as a diphthong. |
| DIPHTHONGIC | • diphthongic adj. Of the nature of diphthong; diphthongal. • DIPHTHONGIC adj. having the nature of a diphthong. |
| DIPHYCERCAL | • diphycercal adj. (Zoology) Describing a symmetric tail fin in which the vertebral column extends to the tip. • DIPHYCERCAL adj. of fishes, etc., having the tail symmetrical about the vertebral column. |
| DIPHYODONTS | • diphyodonts n. Plural of diphyodont. • DIPHYODONT n. a mammal having a second set of teeth that replaces the first. |
| DIPHYSITISM | • DIPHYSITISM n. belief in the dual nature of Christ. |