EXO- 101 EXO- 
———— —— rién) #. [Gk. [Gk. exo, without; feridion, a. 
witho chorion, chorion.]| small erik The outer layer of 
The outer prac of the membrane the spor in certain Fungi 
secreted by the follicular —e ot.) 
surrounding the egg in the ovary exoplasm pig zm) #. [Gk. 
of Insects (zoo/.). exo, tig ge: lasma, something 
exocoel (ék’sdsél) 7. [Gk. exo, with- ulded he em (dto7.). 
out ; £otlos, hollow.} The space exopodite (éksdp’ddit) #. [Gk. exo, 
between the mesenter ries of ad- ae ; pous, foo :} “The outer 
—— sate, coe in certain Zoantharia 
aaauees (é staat oa dr [Gk. 
without ; Zoz/os, h or ae Pert. ‘the 
wal of the coelom ; ere. 
t adjacent couples 
rs meuictebiad in the 
ool.), 
Zoantharia 
(ek sdsé'lém) 7. — 
mbryo 
ae. (ék’sédérm) nm. [Gk. 
without ; derma,skin.] The aerial 
layer ‘of Sponges supposed by 
Haeckel to be equal to ectoderm 
of other animals (zoo/. 
exode (&k’s édér’mis) uw. 1G 
exo, without ; dermis, skin.] 
S toderm. 
exo, —— PP age) ri aon * [Gk 
exo, t; game 
ma 
ett cell wee cour with 
erived from another source 
(zool.). 
exogamy (ékség’ami) #7. [Gk. exo, 
without ; gamos, — e.] Con- 
jugation or fusion of isogametes 
with others of a ” diferent brood 
strical oe sara 6 nag 
Gk. exo, ll ; gaster, ly.] 
Where the shell is coiled Brann 
the dorsal surface of the body 
FE? 
‘Soc éks deren a. [Gk. ex 
without ; ace.]| Develo pa 
from superficial tissue, the super- 
exogna thion (&k’ségnath Ton) nm. [Gk. 
exo, without ; guathos, jaw.] The 
maxillary portion of the upper jaw; 
the maxilla with exception of 
endognathion and ‘mesognathion 
(anat.). 
(ék’sépérid'‘itim) =. 
ran of a_ typical biramous 
ecienepinan limb (zoo/.). 
isa (&k’sdskél’ én) nm. [Gk. 
0, without; s#e/efos, hard.]} 
ae cine gs structure secreted 
by the ectoderm or by the skin 
Zool, 
exosmosis at sdsmo' _ «(Gk 
exo, withou osm impulse. ] 
The passing out thro gh a mem- 
brane of a g r fluid, a phase in 
osmosis Gh ys a: 
éspor) 2. [Gk. 
; ae seed.] The net 
coating of the 7 trp wall; one 
of the conidia (40 
exosporium (aies05 90) rage [Gk. 
exo, without; sforos, s set} The 
outer layer ‘of the sporangial wall 
ot.). 
exostome (ék’sd — nw. [Gk. exo, 
cont stoma, outh.] The 
openi r foramen rm the outer 
wall of the ovule (d07.). 
exostosis (ék’sdstd dee n. — £0, 
ne.] T rm 
without ; osteon, e fen a- 
tion of knots cae Cc w 
(d02.) ; formation of knob-like 
outgrowths of bone a age 
portion, or of dental tissue in a 
a way (anaz.). 
cca (ék’séthe'kcs) nm. [Gk. exo, 
me ai ee The extra- 
capsular tissue of a Coral (zoo/.). 
ex (ék’séthé’kal) [Gk. exo, 
without ; theke, box.] Pert. tissue 
outside the theca of a Coral (zoo0/.). 
exothecate Spee eaie a. k, 
é. box.] Having 
(z00; 
kondt ue [Gk. 
eign. Signifying an 
ard or non-endemic plant 
(&ksd’tésp6r) 7. Jer 
otospore 
aries hap spores, seed.| A 
sporozoite ( 
ccnaniienenile (&ksdt’répizm) nm. [Gk. 
