| HERESIOGRAPHY | • heresiography n. A treatise on heresy. • HERESIOGRAPHY n. a study of or treatise on heresies. |
| HYDROFORMINGS | • HYDROFORMING n. the catalytic reforming of petroleum to increase the proportion of aromatic and branched-chain hydrocarbons. |
| HYDROGENATORS | • hydrogenators n. Plural of hydrogenator. • HYDROGENATOR n. an agent that hydrogenates. |
| HYDROGRAPHERS | • hydrographers n. Plural of hydrographer. • HYDROGRAPHER n. a student of hydrography. |
| HYDROGRAPHIES | • hydrographies n. Plural of hydrography. • HYDROGRAPHY n. the study of bodies of water. |
| HYMNOGRAPHERS | • hymnographers n. Plural of hymnographer. • HYMNOGRAPHER n. one who writes hymns. |
| MERRYTHOUGHTS | • merrythoughts n. Plural of merrythought. • MERRYTHOUGHT n. the furcula between the neck and breastbone of poultry, aka wishbone. |
| MYTHOGRAPHERS | • mythographers n. Plural of mythographer. • MYTHOGRAPHER n. a student of mythography. |
| ORCHESOGRAPHY | • orchesography n. An enhanced form of choreography that includes details of the music to accompany the dance. • ORCHESOGRAPHY n. notation of dancing. |
| PARAHYDROGENS | • PARAHYDROGEN n. a spin isomer of hydrogen. |
| PHRASEOGRAPHY | • PHRASEOGRAPHY n. the making of phraseographs. |
| PHYSIOGRAPHER | • physiographer n. A specialist in physiography. • PHYSIOGRAPHER n. one who practises physiography. |
| PHYTOGRAPHERS | • phytographers n. Plural of phytographer. • PHYTOGRAPHER n. a descriptive botanist. |
| PROSOPOGRAPHY | • prosopography n. A study of the individuals in a group of people within a specific context and their relationships. • PROSOPOGRAPHY n. a biographical sketch; a description of person. |
| PSYCHOSURGERY | • psychosurgery n. (Surgery) Surgery of the brain to treat or alleviate mental illness. • PSYCHOSURGERY n. cerebral surgery employed in treating psychic symptoms. |
| SPECTROGRAPHY | • spectrography n. (Physics, chemistry) The process of using a spectrometer to produce a spectrograph. • SPECTROGRAPHY n. the use of the spectrograph. |