ZYG- 



354 



ZYM- 



zygopleural (zl'goploor'al) a. [Gk. 

 zygon, yoke ; pleuron, side.] Bi- 

 laterally symmetrical. 



zygosis (zigo'sis) n. [Gk. zygosis, 

 balancing.] Conjugation. 



zygosperm (zi'gosperm) n. [Gk. 

 zygon, yoke ; sperma, seed.] A 

 zygospore. 



zygosphene (zl'gosf en) n. [Gk. zygon, 

 yoke ; sphen, wedge.] An articular 

 process on the anterior surface of 

 the neural arch of vertebrae of 

 Snakes and certain Lizards, which 

 fits into the zygantrum (anat.). 



zygosporangium (zi'gosporan'jium) n. 

 [Gk. zygon, yoke ; sporos, seed ; 

 anggeion, vessel.] A sporangium 

 in which zygospores are formed 

 (bot.\ 



zygospore (zi'gospor) n. [Gk. zygon, 

 yoke ; sporos, seed.] A zygote ; a 

 cell formed by the conjugation of 

 similar cells (&?/.). 



zygosporophore (zfgospo'rofor) n. 

 [Gk. zygon, yoke ; sporos, seed ; 

 p herein, to carry.] Zygophore. 



zygotaxis (zi'gotak'sis) n. [Gk. zygon, 

 yoke ; taxis, arrangement.] The 

 tendency towards conjugation be- 

 tween two specialized hyphae in 

 certain Fungi (bot,\ 



zygote (zi'got) n. [Gk. zygotes, yoked.] 



Any cell formed by the union of 

 two gametes or reproductive cells 

 (biol.). 



zygotoblast (zl'gotoblast') n. [Gk. 

 zygotes, yoked ; blastos, bud.] A 

 sporozoite produced by segmenta- 

 tion of the zygotomere in Haema- 

 moebae (zool.). 



zygotomere (zl'gotomer') n. [Gk. 

 zygotes, yoked ; meros, part.J ' A 

 cell formed by segmentation of the 

 zygote in Haemamoebae (zool.). . 



zygotonucleus (zl'gotb'nu'kleus) n. 

 [Gk. zygotes, yoked ; L. nucleus, 

 kernel.] A nucleus formed by the 

 fusion of two gametonuclei (zool.). 



zygozoospore (zi'gozo'ospor) n. [Gk. 

 zygon, yoke ; zoon, animal ; sporos, 

 seed.] A motile cell formed by the 

 union of two similar cells (zool.). 



zymase (zl'mas) n. [Gk. zyme, leaven.] 

 An enzyme found in yeast cells 

 (aot.). 



zymogen (zi'mojen) n. [Gk. zyme, 

 leaven.] A substance capable of 

 being transformed into a ferment 

 (Phys.). 



zymosis (zimo'sis) n. [Gk. zyme, 

 leaven.] Fermentation. 



zymotic (zfmot'ik) a. [Gk. zymotikos, 

 causing fermentation.] Pert, or 

 caused by fermentation. 



