PNE- 
cavities, as in the bones of flying 
birds (zoo/.). 
pne tized (nii’matizd) a, 
uma [Gk. 
pneuma, air.| Furnished with air 
cavities. 
pn na mated (nai ‘matésist) 72. 
kystis, a bladder.] 
The air-bladder or swim-bladder of 
Fishes (zoo/.). 
iabahintophure (ni’matéfor) 7. [Gk. 
ee air ; LORY m, to bear. | The 
[Gk. 
air-sac or float of ‘Siphonophores 
(z00. my an un biaddce of marsh o 
shore- plants (dot. 
pneumatopyle (ail pe m [Gk. 
pneuma, air; pyle, gate.] One of 
the a of : eee umatophore, 
opening above the exterior in 
certain Siohonophowes (zool. 
pneumo (ni’mbégas'tri k) a. 
[Gk. pueuma, air ; guste, ose 
Appl. the tenth c nerv' 
ranial 
supplying heart, lungs, aks" visc one 
i). 
otaxis (n ee = [Gk. 
‘axis, arrangement. 7 
ae ‘idiealacion of 
dioxide in solution; cf 
VS.) 
pod (pod) [M .E. Zod, a bag.] A 
superior, one-celle is one- or many- 
seeded fruit of two valves ; a husk 
ot. 
(pa’ dal) a. 
podal [Gk, fous, a foot.] 
Pert. feet ; 
pod 
a] 
& 
au: 
ee 
of the rs) menoptera 
uniting propodeon and metapodeon 
(pédé’shiiform) a. [Gk. 
oot ; L. forma, shape.] Re- 
sembling a podetium (do7.), 
( [Gk, fous, 
stalk-like elevation from 
allus of some Lichens (402). 
foot. } 
the th 
podeum,—a podeo 
podex (pd'déks) ons 
The nt dei torr about t nus. 
podical (péd'ikal) a. [L. podex. rump. | 
In the anal region ; aff/. a pair of 
small hard p io beside the anus 
ool.). 
G- _— rump. } 
Cos Sena. foot. ] 
tac 
podium (pd'diiim Gk. ous, foot. 
A foot or footlike me (dz07.). ] 
246 
POL- 
permis (pddébrang’kié) 7, Plz. 
[Gk. foot ; brangchia, gills.) 
xopodites o 
aoneaene of certain Arthropods 
— 
oad] 
zool.). 
podocephalous (pddékéf‘Aliis, 
a. [Gk. ee foot ; — , 
a d of fl sona cna 
stalk (402). 
a Sans rs ‘niis) 7. iter pous, 
onos, cone.}| A conical mass 
ors ecmetaant conevtianks the central 
capsule with the disc of Sarcodina 
(zool.). 
podocyst (pid’ésist) 2. [Gk. fous, 
foot; ystis, ladder, ] A pedal 
sinus or caudal vesicle in certain 
Gasteropods (zo0/.). 
(pdd’6dérm) 7. [Gk. pow 
foot; derma, skin.] The decane! 
layer of a hoof, within the horn ny 
layer (zoo/.). 
podogynium (péd’ = Sawer a. [Gk. 
le.] A-stipe 
pous, foot; gyne,a fe 
supporting the einen (dot. 
pod (péd’émér) wz. [ 
ou 
part.] A limb ea 
of Aveta! 3 sid ). 
thalmite (péd’dfthal’mit) #. 
[Gk. fous, foot; ophthalmos, eye.] 
k 
podotheca (pdéd’ Seon nm. 
pous, foot; theke, a'box.] A foot 
co pedi | as of iets or we Sa 
nion (pogo —- ages Onion, 
ate beard.] T ost eine ent 
point of the ins 7 “fepeeseisted on 
the ——— (ana. 
at (potkothérml) a. 
[Gk. "poikilos, vario 70S, 
heat.] ApA/. cold- fidoded animals, 
or those whose temperature varies 
7 that of thesurrounding medium 
oo al ( phys.) 
poikilot therm: —poikilothermal. 
poise a hatin teres, which se 
polar (polar) a. [Gk. polos, a pivot. ] 
In the region of the e an 
axis ; pole. 
polar body,— one of two cells divided 
off from the ovum du 
tion, before the germ-nuclei fase 
(cyt). 
nuclei,—a nucleus —— 
at each end of an angiosperm e€ 
