TRO- 
trochus (tro’kiis) ~. [Gk. ‘rochos, 
wheel.] The inner, anterior, coarser 
ears ae of a rotifer disc; ¢ 
ingul al.), 
tropete (trépa’ ik) @ 
keel. ] 
trophe, nourishm 
The outer layer of cells of a morula 
mo, 
(emb.). 
erie area (trdf’6kro’ — 2. 
[Gk. ¢rophe, nourishment ; chrom 
colour. ] Vegetative chromatin, or 
that which regulates ite 
and functions; cf idioc atin 
(70/.). 
trophochromidia Se steemmneye sae nt. 
ie (Gk a rishment ; 
coop ans 6 “egetative chro- 
midia ; cf idi dia (diol. 
trophodise (erst odish) 7. (Gk. trophe, 
nourishment ; dskos, a_ plate. 
The a gonophore of certain 
Hydrozoa fs) 
trophology (trofol jt) m. [Gk. érophe, 
S 
3 
cus 
nourishment ;_ /ogos, Pr tte 
The science of nutriti ae) 
trophonemata (tr tat neat 2. plu. 
[Gk. % nouri ce 
thread.] Uterine villi i “hair-like 
projections of obranchs, 
which transfer nourishment to the 
cs h the spiracles 
ool.). 
trophonucleus ——— n. [Gk 
he, nourishment ; ucleus, a 
irae The rincipal nucleus | of 
binuclear Protozoa, regulating meta- 
bolism and growth; ¢& 
nucleus (cy). 
trophophore (trdféfér) #.  [Gk. 
trophe, nourishment; pherein, to 
bear. ] internal 
333 
TRU- 
nutritive part of a cell; cf idio- 
plasm (cy7. 
options (trof’ éplast) — 
ny bile nourishment; /aséos, 
Ided.] A re nucleated or 
noes a plastid (do 
trophos cme tris) es trophe, 
ment; soma, body.] The . 
natrhive: polypoid ‘persons of a 
hydroid colony (zoo/. 
sa tel ngia (trdf'dspiin‘ja) 2. 
ee het nourishment ; 
spon 
pon 
layer ae mucous membrane between 
uterine wall and is eames (emdé.). 
sat capes (trdf’6spobn'jiim) x 
[Gk. ¢rophe, pee ert) s spongiia, 
ation 
sponge. 
cells, - ‘aaideas —s ‘occupied 
by branching p uroglia 
cells ( p&ys.). 
trophotaxis (tréf’ 6tak’sis) m. [| 
trophe,n ee 7s, arrange- 
ment.| Stimulation by an agent 
which may ee as food (fAys.). 
trophotropism (tréfdt'répizm) x. 
Gk. ‘frophe, nourishment ; 
a turning.] Tendency 
gan towards a food supply 
(dz0/.). 
trophozoite gm on gue Mt. $Gks fp 
nouris 
on zoo. . 
adult sage ofa 1 Sporoz 
° (trof’6z6 Ae nm. _[Gk. 
free-swimming tunicate colonies 
(zool.). 
tropic movement, — reactionary 
movement to certain stimulation 
(phys.). 
tropism (tro’pizm) 7. [Gk. Wh a 
turning.} The tendency of an 
to a ce 
hoto 
Ponts (a6 3 pofit) n, "Gk. “a 
a plant] A 
ribs,—TriDs 
peceanan dt with the sternum, as 
opp. floating ribs. 
