YOL- 
yolk - spherules, —the remains of 
udo- 
a. oT, 
L. forma, shape.]  ‘Y- 
shaped; aff/. the germinal spot 
oe a certain stage in its development 
etdos, rese 
ypsiloid cartilage,— 
in Salamanders with 
bes func- 
ios lungs (zo0/.). 
Z 
—— (z4lam'dédént) a. [Gk. 
mbda, \ ; odous, tooth. 
‘Appl insectivore narrow 
h \Y-shaped trans- 
verse ridges (hoo ‘53 
zero (zé'rd) [Ar. Albee cipher. ] 
The origin of gr dua 
zero, physiolo seine ete point of 
adaptation to temperate 
Zinn, zonule of,—see zonula ciliaris 
(anat. 
zoaea, (2658'S) n. 
zoea. 
zoarium wee riim) #. ([Gk. 2007, 
animal. ] . who of the indi- 
viduals e : “polpsiat colony; a 
olypary (zeo/.). 
a pains dfilis) a. [Gk 
[Gk. zoe, life] A 
op. poe z 
zoon, animal; Phzlein, to love. ] 
Zoophilous. 
(z0@'4) nm. [Gk. life.] 
zoea A 
early larval form of carta decapod 
Crustaceans (zool. 
zoeaform (20 @aform) a. [Gk 
i 
— otkos, house. | See zooe- 
sate fe (zoe ik) a. [Gk. zoe, life] Of 
or oe life (d20 
al.). 
ik) a. [Gk. zotkos, pert. lit e.] 
nrg animals or ue life (soo/. iy 
351 
ZON- 
zoid (z0id) a. [Gk. zoom, animal; 
“ani resemblance] A spor ozoite 
for y division of spoestlaats 
of Hae mos poridia (soo. 
ese cecang = a r) 7. [Gk z 
mal ; shape ; sien to 
teak e mother cell or 
sporoblast formed by the segmenta- 
seat of the oocyte in Haemosporidia 
ie zone, girdle.] 
uata,—t rhe inner part of the 
> paallat membrane P eaitiamee the 
organ of Sra (anat.). 
zona fasciculata,—radially arranged 
columnar cells in the suprarena 
gland below the aed layer (anat.). 
zona, pectinata,—the o er division of 
the basilar membrane nyse z). 
zona pellucida, —the thick — 
membrane surrounding 
malian ovum wats 
zona reticul —the inner cortical 
layer of "ihe eens gland 
(anat.). 
zonal (z0 re a. [L. sonalis, pert. 
zone. or Pert. a zone. 
zonal s me —see metamerism 
ib nce 
—the view of a Diatom in 
apr the girdle i is seen (d072.). 
zonary nari) @ zonarion, 
aim. aa zone, girdle.] Pert. the 
Zonaria, a division of deciduate 
Macemals in Huxley’s classification 
(zo0l.). 
zonary plac 
zonate (z0’nat) a. __ (Gk 8 apes: sone, girdle 
= ned or marke ings 
nged in a single row, a vario bed 
Zone, piste 
imilar 
ra sta 
set of beds characterized 
typical fossil or set oe fossils ¢ poh . 
zonociliate (z0'nésil'iat <— zone, 
Tattle L. pies ayaa anded 
hoe cilia, as certain ree vad 
(zo 
sceatk i noid) a. [Gk. zone, girdle ; 
eidos, soar blance.] Like a zone. 
tic (26 linet be a. 
zonol Bes 
— pinilie§ mne, pool.| Of or 
pert. a certain seit in depth ; appi. 
ini (déo/.). 
