GLOSSARY. l6l 



Zb'oid (Gr. zoon, an animal ; eidos, shape). A term applied to 



each of the individuals which make up a compound 



organism. 

 Zo'ology (Gr. zoon, an animal ; logos, a discourse). The branch 



of Biology which treats of animal life. 

 Zo'ophyte (Gr. zoon, an animal; phuton, a plant). A term 



sometimes applied to animals which resemble plants, such 



as corals, sea-anemones, sponges, &c. 

 Zo'ospores (Gr. zoos, alive; spora, a seed). The name given 



to spores which are provided with cilia, and are therefore 



capable of spontaneous movement. 

 Zo'otomy (Gr. zoon, an animal ; temno, I cut). The art of 



dissecting animals. 

 Zygan'trum (Gr. zugos, a yoke ; antron, a cave). A fossa on 



the posterior face of the arches of each of the vertebrae of 



the Lacertilia, into which the zygospherie of the succeeding 



vertebra fits. 

 Zygapo'physis (Gr. zugos, a yoke; apophuo, I grow). The 



yoke-pieces or articulations of the vertebrae. 

 Zygocar'diac os'sicle (Gr. zugos, a yoke ; kardia, the stomach). 



The name of each of a pair of pieces in the skeleton of 



the stomach of some Crustacea. 



Zy'goma ") (Gr. zugos, a yoke). The arch formed by 



Zygoma/tic arch j the malar bone and the zygomatic process 



of the temporal bone of the skull. 

 Zygoma/tic fos'sa. The lower part of the fossa bridged over 



by the zygomatic arch. 

 Zygoma'tici muscles. Two muscles (major and minor) arising 



from the zygomatic arch. 

 Zy'gosphene (Gr. zttgos, a yoke ; sphen, a wedge). A process 



on the anterior face of each of the vertebral arches in the 



Lacertilia, which articulates with the zygantrum of the 



preceding arch. 



Zy'gospore (Gr. zugos, a yoke; spora, a seed). A spore pro- 

 duced by the union of buds from two adjacent hyphae in 



the process of conjugation by which some fungi multiply. 



