| ARCHAEOPTERYX | • archaeopteryx n. Alternative spelling of archeopteryx. • Archaeopteryx prop.n. A taxonomic genus within the family Archaeopterygidae – known from fossils and widely accepted as the… • archæopteryx n. Rare spelling of archeopteryx. | 
| ARCHAEOPTERYXES | • archaeopteryxes n. Plural of archaeopteryx. • ARCHAEOPTERYX n. a Jurassic fossil bird of the Archaeopteryx genus, with a long bony tail, sharp-toothed jaws, and wings bearing three clawed digits. | 
| EXHILARATORY | • exhilaratory adj. Causing exhilaration. • EXHILARATORY adj. serving to exhilarate. | 
| EXHORTATORY | • exhortatory adj. Serving to exhort. • EXHORTATORY adj. using exhortation. | 
| HYDROEXTRACTOR | • hydroextractor n. A machine that uses a rotating drum to remove excess water from textiles. • HYDROEXTRACTOR n. a drying machine that works centrifugally. | 
| HYDROEXTRACTORS | • hydroextractors n. Plural of hydroextractor. • HYDROEXTRACTOR n. a drying machine that works centrifugally. | 
| HYDROTHORAXES | • hydrothoraxes n. Plural of hydrothorax. • HYDROTHORAX n. water liquid in the pleural cavity. | 
| HYDROXYBUTYRATE | • hydroxybutyrate n. (Chemistry) any salt or ester of hydroxybutyric acid, but especially of gamma-hydroxybutyric acid. • HYDROXYBUTYRATE n. as in gamma hydroxybutyrate, a substance that occurs naturally in the brain, used medically as a sedative but also as a recreational drug and alleged aphrodisiac. | 
| HYDROXYUREA | • hydroxyurea n. (Organic chemistry) The hydroxylated derivative of urea, NH2CO-NHOH, used as an antineoplastic drug;… • HYDROXYUREA n. a drug used to treat some forms of leukemia, melanoma, and malignant tumors. | 
| HYDROXYUREAS | • hydroxyureas n. Plural of hydroxyurea. • HYDROXYUREA n. a drug used to treat some forms of leukemia, melanoma, and malignant tumors. | 
| HYPEROREXIA | • HYPEROREXIA n. compulsive overeating. | 
| HYPEROREXIAS | • HYPEROREXIA n. compulsive overeating. | 
| HYPERPROSEXIA | • hyperprosexia n. (Medicine, rare) Excessive attention; an abnormal state in which a person concentrates on one thing… • HYPERPROSEXIA n. abnormal powers of perception, as in Australian aboriginal trackers. | 
| HYPERPROSEXIAS | • HYPERPROSEXIA n. abnormal powers of perception, as in Australian aboriginal trackers. | 
| OROPHARYNXES | • oropharynxes n. Plural of oropharynx. • OROPHARYNX n. the part of the pharynx between the soft palate and the epiglottis. | 
| XEROGRAPHICALLY | • xerographically adv. In a xerographic way; by xerography. • XEROGRAPHIC adv. relating to xerography. | 
| XEROGRAPHY | • xerography n. A photocopying process in which a negative image formed on an electrically charged plate is transferred… • XEROGRAPHY n. a nonchemical photographic process in which the plate is sensitized electrically and developed by dusting with electrically-charged fine powder. | 
| XERORADIOGRAPHY | • xeroradiography n. A method of X-ray photography which uses an electrically charged metal plate instead of film. • XERORADIOGRAPHY n. radiography used esp. in mammographic screening for breast cancer that produces an image using X-rays in a manner similar to the way an image is produced by light in xerography. | 
| XYLOGRAPHER | • xylographer n. A person who makes xylographs. • XYLOGRAPHER n. one who practises xylography, the art of making engravings on wood. | 
| XYLOGRAPHERS | • xylographers n. Plural of xylographer. • XYLOGRAPHER n. one who practises xylography, the art of making engravings on wood. |