ZON- 



352 



ZOO- 



zonoplacental (zo'noplase'n'tal) a, [L. 

 zona, girdle ; placenta, cake.] 

 Having a zonary placenta (zool.}. 



zonula ciliaris (zo'nula silla'ris) n. 

 [L. zonula, dim. of zona, girdle ; 

 cilium, eyelash.] The hyaloid 

 membrane forming the suspensory 

 ligament of the lens of the eye 

 (anat.}. 



zonule (zo'nul) n. [L. zonula, dim. of 

 zona, girdle.] A little zone, belt, 

 or girdle ; a zonula (anat.}. 



zooblast (zo'oblast) n. [Gk. zoon, 

 animal ; blastos, bud.] An animal 

 cell. 



zoocaulon (zo'okol'on) n. [Gk. zoon, 

 animal ; kaulos, stalk.] See zoo- 

 cleiiclrium. 



zoochlorellae (zo'okloreTe) n. plu. 

 [Gk. zoon, animal ; chloros, green.] 

 Symbiotic green Algae (Proto- 

 coccaceae) living in various groups 

 of the Protozoa, e.g. Sarcodina, 

 Radiolaria (biol.}. 



zoocoenocyte (zo'ose'noslt) n. [Gk. 

 zoon, animal ; koinos, common ; 

 kytos, hollow vessel.] A coenocyte 

 bearing cilia in certain Algae such 

 as Vaucheria (bot.}. 



zoocyst (zo'oslst) n. [Gk. zoon, animal ; 

 kystis, hollow sac.] A sporocyst 

 (zool.}. 



zoocytium (zo'osit'Ium) n. [Gk. zoon, 

 animal ; kytos, hollow sac.] In 

 certain Infusoria, the common 

 gelatinous and often branched 

 matrix (zool.}. 



zoodendrium (zo'oden'drium) n. [Gk. 

 zoon, animal ; dendron, tree.] The 

 tree-like branched stalk of certain 

 colonial Infusorians (zoo/.).' 



zoodynamics (zS'odlnam'iks) n. [Gk. 

 zoon, animal ; dynamis, power.] 

 The physiology of animals (phys.}. 



zooecium (zoe'sium, zoe'shtum) n. 

 [Gk. zoon, animal ; oikos, house.] 

 A chamber or cell enclosing a 

 polyzoan nutritive zooid (zool.}. 



zooerythrin (zo'ogrith'rin) n. [Gk. 

 zoon, animal ; erythros, red.] A 

 red pigment found in the plumage 

 of various Birds (zool.}. 



zoofulvin (zo'oful'vin) n. [Gk. zoon, 

 animal ; L. fulvus, yellow.] A 

 yellow ipigment found in the 

 plumage of various Birds (zool.}. 

 (zo'ogamct') //. [Gk. soon, 



animal; gamos, marriage.] A motile 

 gamete or planogamete (bot.}. 



zoogamy (zSog'ami) n. [Gk. zoon, 

 animal ; gamos, marriage.] Sexual 

 reproduction in animals (zool.}. 



zoogenesis (zo'ojgn'esis) n. [Gk. zoon, 

 animal ; gignesthai, to produce.] 

 The origin of animals (biol.}. 



zoogeography (zo'ojeog'rafi) n. [Gk. 

 zoon, animal ; ge, earth ; graphein, 

 to write.] The science of the dis- 

 tribution of animals on earth (biol.}. 



zoogloea (zo'ogle'a) . [Gk. zoon, 

 animal ; gloia, glue.] A mass of 

 bacteria embedded in a muci- 

 laginous matrix, frequently forming 

 an iridescent film (zool.}. 



zoogonidium (zo'ogonid'ium) n. [Gk. 

 zoon, animal ; gonos, offspring.] 

 One of the motile spores formed 

 in the gonidangium of Algae (bot.}. 



zoogonous (zoog'onus) a. [Gk. zoon, 

 animal ; gonos, offspring.] Vivi- 

 parous (zool.}. 



zooid (zo'oid) n. [Gk. zoon, animal ; 

 eidos, like.] A member of a com- 

 pound animal organism ; an indi- 

 vidual or person in a coelenterate 

 or polyzoan colony ; the posterior 

 genital and non-sexual region 

 formed in many Polychaetes (zool.}. 



zoolith (zo'olith) n. [Gk. zoon, 

 animal ; lithos, stone.] A fossil 

 animal. 



zoology (zool'djl) n. [Gk. zoon, 

 animal ; logos, discourse.] The 

 branch of science dealing with the 

 structure, functions, history, and 

 distribution of animals. 



zoon (zo'on) n. [Gk. zoon, animal.] 

 An individual developed from an 

 egg (zool.}. 



zoonerythrin (zS'ongrith'rin) n. [Gk. 

 zoon, animal ; erythros, red.] A 

 red colouring matter found in 

 various animals (zool.}. 



zoonite (zo'onit) n. [Gk. zoon, animal.] 

 A body segment of an articulated 

 animal (zool.}. 



zoonomy (zoon'b'ml) n. [Gk. zoon, 

 animal ; nomos, law.] The laws 

 dealing with animal life (biol.}. 



zoophilous (zoof'ilus) a. [Gk. zoon, 

 animal ; philein, to love.] Appl. 

 plants which are adapted for 

 pollination by animals other than 

 Insects (bot.}. 



