DIS- 
diskos, disc; Odlastos, bud] A 
blastula formed teens a meroblastic 
ey with disc-like blastoderm 
discocarp Pion seme i n. [Gk. diskos, 
disc; arpos, fruit.) A special 
SCENT of the thalamus below 
the calyx (doz. 
discoctasters (dis koktas’ cee) * , plu. 
[Gk. diskos, disc ight ; 
aster, 4 onge ae with 
eight rays terminating in discs, 
each disc corresponding in position 
to the corners 2 cube ; a modi- 
fied hexactine (z 
discodactylous (ane kodak’ tiliis) a. 
[Gk. diskos, disc ; daktylos, finger] 
With suckers at the ends of t 
fingers (zool. 
Gk dion _ (dis kohéksak tin) n. 
G 
é 
ray. | sponge spicule with six 
Five rays meeting at right angles 
See caeiaten (dis’kohéksas'tér) 7. 
[Gk. diskos, disc; hex, six; aster, 
tar.| A hex moe with the ra ys 
) 
; diskos, 
eee, Flat 
ae etdos, like. 
derm forms a one-layered disc or ca 
which spreads over the yolk ek. 
—— tinu t —see muta- 
iacemila (diskén’ala) #. [Gk. diskos, 
ag An eight- a stage in the 
evelopm of certain 
Coelenterates (z00 
ooct: r (Aiud), — see 
discoctas 
Dcacaiacanta "(ais sképlasén’ta) #. [Gk. 
diskos, disc; L. placenta, Placenta] 
A placenta with th on 
tee cake-like disc on 
.—in a 
junct saieiingk a. [L. ds, apart ; 
Jungere, to join.] Having the bod 
regions oe by deep con- 
strictions (zoo/.). 
disjunctive bios ‘is,—a mutually 
sym 
helpful condition of symbiosis 
79 
DIS- 
es there is no direct con- 
spt seit the partners (dzo/.). 
diak,— 
Saieccnonh > (atspér’mits) a. [Gk. dis, 
twice ; sperma, seed.] Having two 
seeds (bo ot.). 
dispe ae ca [Gk. dis, 
twice ; a -iberinn d.] The entrance 
of t wy spe Snuatouee into an ovum 
(diol. 
dispersal (dispér’sail) # [L. dis, 
apart; spargere, to strew.] The 
actual scattering or distributing of 
organisms on the earth’s surface 
(b20 onl 
dispireme (dispirém) #. [Gk. ds, 
twice 5 speirema, emeg ig stage 
aryokinesis in each 
daughter nucleus has peter rise to 
pireme (cyz. 
displacement (displas'mént) n. [O.F. 
desp 
its shifting hing its normal 
of insertion 
dissected a ists) ie dis, apart ; 
ing the lamin 
s, the incisions <= 
nearly na the ‘midri bot 
dissepiment (disép’ imént) 7 
o 
a 
o 
oblique calcareous partitions 
stretching from septum to septum 
and pe sie 3 the interseptal loculi 
below (zoo/.). 
ent (disifitnt) a aioe ats, apart ; 
pT to lea ging open ; 
appl. ca sale es of v. vat ious plants 
which dehisce raed (d02.). 
dissoconch (dis’ékéngk’) w. [Gk 
dissos, double ; ko ongehe shell.] The 
shell of a veliger larv: ol. 
dissogeny (dis6j'éni) “% os fgets 
dot uble 3 genos, bir th.] 
g two ay mature 
periods in the same a animal—one 
e larva, one in the oe 5 ties). 
Secaee ny (d isdg’bni),—see dissogeny. 
distal (dis’ tal)a. [L. re apart ; sfare, 
nd.] Standing far a 5 _ 
bristles, etc. ; vt. end 
structure farthest from a riddle 
line of the er ee (bt0 
distichalia (distika'lia) 7. ae be 
dicticls, s, with two rows.) 
