| HELIOTYPY | • heliotypy n. A method of transferring pictures from photographic negatives to hardened gelatin plates from which… • HELIOTYPY n. a photomechanical process in which the gelatine relief is itself used to print from. |
| HOMOSTYLY | • homostyly n. (Botany) The condition of being homostylous. • HOMOSTYLY n. in flowers, the existence of styles of only one length. |
| HYDROLYTE | • hydrolyte n. A substance subjected to hydrolysis. • HYDROLYTE n. a body subjected to hydrolysis. |
| HYETOLOGY | • hyetology n. (Rare, archaic) The scientific study of precipitation. • HYETOLOGY n. the science of rainfall. |
| HYLOPHYTE | • HYLOPHYTE n. a woodland plant. |
| HYPOCOTYL | • hypocotyl n. (Botany) In plants with seeds, that portion of the embryo or seedling between the root and cotyledons. • HYPOCOTYL n. the stem of a plant below the cotyledons. |
| HYPOSTYLE | • hypostyle adj. (Architecture) Having a roof supported on a row of columns. • hypostyle n. (Architecture) A building or chamber whose roof is supported on a row of columns. • HYPOSTYLE adj. having a roof supported by columns. |
| MYTHOLOGY | • mythology n. (Countable and uncountable) The collection of myths of a people, concerning the origin of the people… • mythology n. (Countable and uncountable) A similar body of myths concerning an event, person or institution. • mythology n. (Countable and uncountable) Pervasive elements of a fictional universe that resemble a mythological universe. |
| PHYTOLOGY | • phytology n. (Biology) the study of plants; botany. • PHYTOLOGY n. the study of plants. |
| POLYMATHY | • polymathy n. The knowledge of many arts and sciences; variety of learning. • POLYMATHY n. the knowledge of many arts and sciences. |
| POLYPTYCH | • polyptych n. (Art) a work consisting of multiple painted or carved panels joined together, often with hinges. • POLYPTYCH n. a decorated altarpiece or panel with 3 or more hinged sections that can be folded together. |
| THELYTOKY | • thelytoky n. (Biology) A form of parthenogenesis in which females are produced from unfertilized eggs. • THELYTOKY n. the parthenogenetic production of females only. |
| YOUNGTHLY | • youngthly adj. (Obsolete, poetic) youthful. • YOUNGTHLY adj. (Spenser) youthful, also YOUTHLY, YOUTHSOME, YOUTHY. |