PRA- 
— anterior part of the oy Be of 
nsect thoracic ring (zoo/. 
pra-, présfé’noid) Me 
L. prae, before ; Gk. sphen, wedge. 
a es part of the sphenoid 
te 
praesternal (pra-, préstér'nal) a. [L. 
prae, before ; sternum, breast- bone.] 
Appl. the jugular notch, on the 
_—— border of the sternum 
(ana 
preaxial (pr sian a  [L. rae, 
— axis, axle.] In front of 
ea 
— = (preka va) 2. [L. prae, before ; 
cav. ollow.] ‘The meee vena 
pris — rns vein (zool.). 
precentral (présén’tral) a. i et 
m 
prechordal (prekordal) a i {Ln pra), 
efore ; chorde, a cord.] An- 
teriorly to the notochord or spinal 
cord ; afp/. part of the base of the 
skull (e (em 
precipitin (presi pitin) # [L. pracceps, 
dlon smitate deavelnne 
(pays.). 
val (prékli’val) a. ([L. prae, 
1. Appl. a 
“ the clivus of the 
cerebellum 
recoracoid (prekov kod) N. 
prae, before; Gk. korax, crow.] 
An anterior ‘ventral bone of the 
pectora gher vertebrates 
sation of the various physiological 
molecules in definite areas an 
substances of the undevelopedegg,— 
“08 theory of germinal localization 
peainanany senso Oe N. {L Sa 
before ; dens, at 
the tip of the j i or many Siniaeare 
al, 
2 a S ay Agape . sa ti 
~— before ; epi, u 
mouth. plate shite 
basal portion of the rasa of 
“certain Avechuids (g00 ret 
prefioration (préfléra’shin) ». [L. 
253 
PRE- 
prae, before; fios, flower.) The 
arrangement "of floral leaves in a 
flower-bud (407.). 
a oe folia’ iE ames | O 
eg , before; folium, leaf.] The 
rangem men a o foliage leaves in 
the bud sage (b0t.). 
m theory,—the theory of 
ayaiation me gaed to which it 
that each ovum of 
ot contained a miniature 
— and that nourishment only 
required ie Sraaad g it into the 
perfect ie 
frontal (pré éfriin’ tal) a 1h. Fi 
before ; front forehead. } App 
bone anterior to the rat 68 sie 
of poses Vecebentes are paired 
lates or scales anterior to the 
Pata! scale in some Reptiles (zo00.). 
g’glién’ik) @. 
na 
cord to the sympathetic cell station 
anat.). 
preglobulin sameness the le 
prae, before; globulus, a small 
ee comp pend. Brecas of 
blood corpuscles (ph 
éhaliks s) 7 le. a 
Mammals (za 
deskainieee (prea) n. piu. [L. 
prae, before ; halter, Pot 
The squamae of Diptera ig fee 
um (pr Ehbstotim) [L. 
prae, before ; hele to drink.] 
A rudimentary ans like sucker 
(dot.). 
prehensile (préhén’sil) a [L. pre- 
hendere, to seize.] Ada pted for 
catching hold, as a ‘octertid 
tentacle (zoo/.). 
prehepatic (prehepae'to a. [L. prae, 
before ; Aepar, liver.] Appi. that 
— tract anterior 
nb.) 
_— (plaka a. [L. pra 
befo Ik.] Pert. a heats: 
tion occur previous to 
[L. prae, 
The theory that certain portions of 
