| 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. |
| HEPTACHORDS | • heptachords n. Plural of heptachord. • HEPTACHORD n. a system of seven sounds. |
| HEPTAHEDRAL | • heptahedral adj. Having seven plane surfaces. • HEPTAHEDRAL adj. like a heptahedron. |
| HEPTAHEDRON | • heptahedron n. (Mathematics) any polyhedron having seven faces. • HEPTAHEDRON n. a solid figure having several plane faces. |
| HERALDSHIPS | • heraldships n. Plural of heraldship. • HERALDSHIP n. the office of a herald. |
| HOLOGRAPHED | • holographed v. Simple past tense and past participle of holograph. • HOLOGRAPH v. to write a text in one's own handwriting. |
| HYDROPHANES | • hydrophanes n. Plural of hydrophane. • HYDROPHANE n. a semitranslucent variety of opal that becomes translucent or transparent on immersion in water. |
| PHOSPHATIDE | • phosphatide n. (Chemistry) a phospholipid. • PHOSPHATIDE n. a phospholipid. |
| PLOUGHHEADS | • ploughheads n. Plural of ploughhead. • PLOUGHHEAD n. the draught iron of a plough, also PLOWHEAD. |
| PREHEADACHE | • preheadache adj. Before the onset of a headache. • PREHEADACHE adj. occurring before a headache. |
| RHODODAPHNE | • RHODODAPHNE n. (Spenser) oleander. |
| RHODOPHANES | • RHODOPHANE n. the red pigment contained in the inner segments of the cones of the retina in animals. |
| SHEEPSHEADS | • sheepsheads n. Plural of sheepshead. • SHEEPSHEAD n. a large and valuable sparoid food fish found on the Atlantic coast of the United States, also SHEEPHEAD. |