| DIPHYLLOUS | • diphyllous adj. (Botany) Having two leaves. • DIPHYLLOUS adj. having two leaves. |
| HELIOTYPED | • heliotyped v. Simple past tense and past participle of heliotype. • HELIOTYPE v. to obtain such a picture. |
| HEXAPLOIDY | • hexaploidy n. The property of being hexaploid. • HEXAPLOIDY n. the state of having six times the normal number of chromosomes. |
| HYDROPHILE | • hydrophile n. (Chemistry) Any hydrophilic substance. • hydrophile n. (Zoology) Any organism that thrives in the presence of water. • hydrophile adj. Hydrophilic. |
| HYDROPHILY | • hydrophily n. A form of pollination whereby pollen is distributed by the flow of waters, particularly in rivers and streams. • HYDROPHILY n. an affinity for water. |
| HYPERPLOID | • hyperploid adj. (Genetics) Having a number of chromosomes that exceeds an exact multiple of the haploid number. • hyperploid adj. (Medicine) Having a number of chromosomes that exceeds the diploid number. • hyperploid n. A hyperploid organism. |
| HYPOLYDIAN | • hypolydian adj. (Music) Describing a mode of church music represented by a major scale from C to F. • HYPOLYDIAN adj. relating to a mode in ancient Greek music. |
| HYPOPLOIDS | • hypoploids n. Plural of hypoploid. • HYPOPLOID n. a chromosome number a few below the normal diploid number. |
| HYPOPLOIDY | • hypoploidy n. The condition of being hypoploid. • HYPOPLOIDY n. the state of being hypoploid, having a chromosome number a few below the normal diploid number. |
| PHYLLODIAL | • phyllodial adj. Relating to a phyllodium. • PHYLLODIAL adj. relating to a phyllode, a flattened stem functioning as leaf. |
| PHYLLODIES | • phyllodies n. Plural of phyllody. • PHYLLODY n. a flower transformation. |
| PHYLLODIUM | • phyllodium n. (Botany) A petiole dilated into the form of a blade, and usually with vertical edges, as in the Australian acacias. • PHYLLODIUM n. a petiole dilated into the form of a blade, and usually with vertical edges, as in the Australian acacias. |
| PODOPHYLIN | • PODOPHYLIN n. a cathartic resin obtained from the rhizomes of the Podophyllum genus, also PODOPHYLLIN. |
| PODOPHYLLI | • PODOPHYLLUM n. the dried rootlet and rhizome of the mayapple, used as a caustic. |
| POLYHEDRIC | • polyhedric adj. Polyhedral; many-sided. • POLYHEDRIC adj. having many faces or planes, also POLYHEDRAL. |
| POLYHYBRID | • polyhybrid n. A hybrid whose parents differ in several ways. • POLYHYBRID n. a plant hybridised from many sources. |
| POLYHYDRIC | • polyhydric adj. (Chemistry) containing two or more hydroxy groups. • POLYHYDRIC adj. having several hydroxyl groups. |
| PREHOLIDAY | • preholiday adj. Before a holiday. • PREHOLIDAY adj. taking place before a holiday. |