| HELMINTHOLOGY | • helminthology n. (Zoology) The branch of zoology related to the study of helminths (parasitic worms). • HELMINTHOLOGY n. the study of parasitic worms. |
| HONEYMONTHING | • HONEYMONTH v. (obsolete) to spend one's honeymoon, also HONEYMOON. |
| ICHTHYOLOGIES | • ICHTHYOLOGY n. the study of fish. |
| ORTHOHYDROGEN | • orthohydrogen n. (Physics) form of the hydrogen molecule (H2) in which the two nuclei have parallel spin; about 75% of… • ORTHOHYDROGEN n. the form of molecular hydrogen, constituting about 75 per cent of the total at normal temperatures, in which the nuclei of the atoms spin in the same direction. |
| PHOTOGLYPHIES | • PHOTOGLYPHY n. photography by photoglyph. |
| PHYTOPATHOGEN | • phytopathogen n. (Biology) Any organism that is pathogenic to plants. • PHYTOPATHOGEN n. an organism parasitic on a plant host. |
| ORTHOHYDROGENS | • orthohydrogens n. Plural of orthohydrogen. • ORTHOHYDROGEN n. the form of molecular hydrogen, constituting about 75 per cent of the total at normal temperatures, in which the nuclei of the atoms spin in the same direction. |
| PHYTOGEOGRAPHY | • phytogeography n. (Biology) The science that studies the geographical distribution of plants; geobotany. • PHYTOGEOGRAPHY n. the geography of plant distribution. |
| PHYTOPATHOGENS | • phytopathogens n. Plural of phytopathogen. • PHYTOPATHOGEN n. an organism parasitic on a plant host. |
| HYETOMETROGRAPH | • HYETOMETROGRAPH n. an instrument for recording rainfall. |
| PHOTOTELEGRAPHY | • phototelegraphy n. The fax system. • PHOTOTELEGRAPHY n. the transmission of drawings by phototelegraph. |
| PHYTOGEOGRAPHER | • phytogeographer n. A person involved in phytogeography. • PHYTOGEOGRAPHER n. a student of phytogeography. |
| PHYTOGEOGRAPHIC | • phytogeographic adj. Phytogeographical. • PHYTOGEOGRAPHIC adj. relating to phytogeography. |
| PHYTOPATHOGENIC | • phytopathogenic adj. Pathogenic to plants. • PHYTOPATHOGENIC adj. of or like a phytopathogen. |
| TELEPHOTOGRAPHY | • telephotography n. (Photography) Photography of distant subjects using a telephoto lens. • telephotography n. (Dated) The transmission of images over a distance, especially by facsimile. • TELEPHOTOGRAPHY n. the photography of distant objects (as by a camera provided with a telephoto lens). |