| ETHNOHISTORY | • ethnohistory n. The history of an indigenous people. • ETHNOHISTORY n. a study of the development of cultures. |
| ETHOXYETHANE | • ethoxyethane n. (Organic chemistry, systematic name) diethyl ether. • ETHOXYETHANE n. a type of ether, aka diethyl ether, an isomer of butanol. |
| HETEROCHRONY | • heterochrony n. (Biology) the variation in ontogeny of individuals of a species that gives rise to evolution. • HETEROCHRONY n. divergence from normal time sequence in development, also HETEROCHRONISM. |
| HONEYMONTHED | • HONEYMONTH v. (obsolete) to spend one's honeymoon, also HONEYMOON. |
| HYPHENATIONS | • hyphenations n. Plural of hyphenation. • HYPHENATION n. the act of hyphenating. |
| HYPNOTHERAPY | • hypnotherapy n. Treatment of disease by means of hypnotism. • HYPNOTHERAPY n. therapy involving the use of hypnotism. |
| HYPOSTHENIAS | • HYPOSTHENIA n. lack of strength. |
| HYPOTHENUSES | • hypothenuses n. (Dated) plural of hypothenuse. • HYPOTHENUSE n. the longest side of a right-angled triangle, also HYPOTENUSE. |
| HYPOXANTHINE | • hypoxanthine n. (Organic chemistry) A bicyclic heterocycle, 3,7-dihydropurin-6-one, that is an intermediate in the biosynthesis… • HYPOXANTHINE n. a purine base found in plant and animal tissues that yields xanthine on oxidation. |
| METHYLPHENOL | • METHYLPHENOL n. a type of aromatic organic compound, aka cresol. |
| NYCHTHEMERON | • nychthemeron n. A period of one day and one night, a date: in the West, this is a period of 24 consecutive hours. • NYCHTHEMERON n. (Greek) a full period of a day and night. |
| OSTEICHTHYAN | • osteichthyan n. A bony fish of the class Osteichthyes. • OSTEICHTHYAN n. a bony fish. |
| PHANEROPHYTE | • phanerophyte n. (Biology) Any woody plant that carries its dormant buds openly on branches above the ground. • PHANEROPHYTE n. a perennial plant that bears its perennating buds well above the surface of the ground. |
| PHYTOBENTHOS | • phytobenthos n. (Biology) benthic organisms that are plants or algae. • PHYTOBENTHOS n. plants living at the bottom of water collectively. |
| PHYTOHORMONE | • phytohormone n. A plant hormone. • PHYTOHORMONE n. a plant hormone, regulating growth. |
| TECHNOGRAPHY | • technography n. The description of the arts and crafts of tribes and peoples. • technography n. (Telecommunications) Live capture of meeting notes while projecting the real-time transcription to participants. • TECHNOGRAPHY n. the description of arts and crafts. |
| THEOPHYLLINE | • theophylline n. (Organic chemistry, pharmacology) A bitter crystalline compound present in small quantities in tea leaves… • THEOPHYLLINE n. an isomer of theobromine found in tea, used in medicine. |