Trochilium 
trod 
IrOChilium (tro-kil'i-um), M. [NL. (Seopoli. contrivance deflected iat nearly a right angle. This troch- trochosphere (trok'o-sfer), w. 
1777), < (Jr. IY>O,VI><, some small bird: see tro- a n /* h " wcv c' r "!^!^''^ " !l '" " -pin-re. | That 
C/II/H.S-I.] A genus of clear-winged hawk-moths, .iter'the direction of th,-r .).. ul.le.bi-lll.il mne'l,.. "<' various annelids, mollusks. and 
inclnding large species with transparent wings, u th- -. and mnohyoid. See cut* under ry<i which has a i-ir<-let of cilia. The t. 
including large species with transparent wings, 
obsolete tongue, subelnvntc nntentue with a 
brush of hair at the tip, and rather densely 
clothed legs, which, however, are not tufted. 
T. aiiijoniii.i of the 1 rrited States is so called 
from its hee-like appearance. 
trOChilUS 1 (trok'i-lus), n. [NL., < L. trnrliilui, 
< Gr. TpoxOac,, some small bird, < rpi'xen; run : 
see trni-lius. ( 'f. tnx-liil* .] 1. A trochil: one 
of several different birds, (o) A bird described by 
and eyeball. (6) In the ellK.w -Joint, the articular i 
of the inner condyle of the numerus, with which the 
ulna articulates: distinguished from the ciipltclliirn 
<'iii' r convex surface for the art icu hit ion of the radius : so 
called because In man It Is concave from side to side, 
though very convex In the opposite direction, thus afford- 
ing a surface like that of the rim of a pulley-wheel. " 
[< tir. ri*>x6f, a 
ton. i 
and trilllluseoi.ls 
h.nphere In 
Is an advanced gastnila or gutrular stage of tie 
embryo, prior to tin- vellger staur, when the original blal- 
topore has been lost or traniformeil, a rudimentary mouth 
and anus have appeared, and there In an equatorial cii . 1. 1 
c.f cilia about the iph.-ioidal liody. In inolluiks alao 
called nevetnbryo (see typem* 
or sitmlpipi-r which enters the mouth of the crocodile and 
tceds by picking the reptile's teelh Many surrnincs have 
been made In the attempt to identify this bird. It U cer- 
tainly one of the small plover like birds of the region of 
the Nile, piohahh either the KK.tptian courser, criic.nlill 
bird, or nil-mil-, /'furiantu /effijftiuK. Ix-longlng to the sub- 
family <.'iirsriiiue (see cut under riiiniantu), or the Egyp- 
tian spin u he-'cil plover, llojtlnftena tpinofta (see cut 
under H/IMI-- Timiftt). (6) One of 'Several very small Kuro- 
pean warbler-like birds, an the golden-crested wren, or 
Kinglet, l!i- : itilu. -n' ' tin* (see cut under ijiMcretl), and the 
willow warbler, /'/<.'///"*c";mx irochilu*, etc. (c) Some or 
any humming-bird ; a collbri. 
2. [<!!]>. | In nrnilli.. a Linnean genus of hum- 
ming-birds, type of the family IrochitidiB, for- 
merly including all the species then known, 
since divided into perhaps 200 modern genera. 
The generic name IB now commonly restricted to such 
species aa the common ruby-throated humming-bird of 
the United States, T. colubria, and the black-throated hum- 
ming bird of California, T. atexandri. See cut under Aum- 
miny-bird. 
trOChilUS" (trok'i-lus), H.; pi. trocliili (-li). [< 
L. trochilus, < Gr. rpo^i/of, a broad hollow mold- 
ing running round the base of a column, a 
casement, scotia, < rptxftv, run.] In arch., same 
as scotia. 
trochin (tro'kin), n. [< Gr. rpo^or, wheel, some- 
thing spherical or circular (see troclitut), + -iii*.~ 
| XL. (Deslong- 
-* trochospherical (trok-o sfer'i-k;il : 
.. - . -i. . *-' . flni*nlit r> + -ir-til.] Having a Hpheri.-al ti 
letathorax through which piutsen the tendon . ' , 
of the abdomen, and whose smooth rim serves as a sort of and a ciliated circlet ; of or per 
pulley. Kirby and Sfence.TUAal trochlea. HtttMal i-hosphere. 
trochlear (trok'le-iir), . and . [< NL. trix-h- Trochotoma (tro kot'o-ro)i " 
lraris,< L. frocAb'a',' pulley: see tr<x-l,lra.] I. n. champs, 1841), < Gr. TOO^O?, 
1. Pulley-like; forming a loop that acts like a wheel, + -ro/iof, < Tt/irnr. 
pulley for a tendon to run through, or affording raiiiiv, cut.] A genus of 
a surface like that of a pulley, upon which a pletirotoniarioid gastropods 
bone may ride back and forth. See trochlea. with n tn.i-hiform shell, an 
2. In />.., circular, compressed, and i-ontracted infundibuliform base, and a 
in the middle of its circumference, so aa to re- slit above the carina, obliler- 
semble a pulley, as the embryo of Commetina ated except near the margin 
/'iiiiiiiiinia. A\6otroclilnitr. 3. Pertaining to or of the aperture. The spe- 
connected with a trochlea: as, a trochlcnr nnis- eies nourished in the UMM 
cle or nerve; trochlear movements. Trochlear seas. 
fosaa, small depression In the orbital plate of the frontal Trochozoa (trok-o-y.o'ft), n. /<'. 
bone, situated near the internal angular proceas.for attach- 
ment of the trochlea of the eye. Trochlear muscle, the 
through a trochlea. See cut under eyeball.' 
nerve (nervwt traehlearut), the fourth and smallest of the 
cranial nerves. Its superficial origin Is Just behind the 
corpora quadrigcmina. It supplies the superior oblique ,.__ ag ,j tn hovo h*u>n 
muscle of the orbit. It Is purely motor in it function, supnosed to have 
[NL., pi. of 
trocliozoiin.] Those invertebrates, as annelids 
and mollusks, whose larval forms in one stage 
arc troehospheres ; also, loosely, such larva 1 , 
collectively considered, or hypothetical organ- 
isms from which annelids and mollusks are 
. 
Also called patheticut, oculmntucularu tuptnor. See sec 
ond cut under frrotii. Trochlear spine. See mine. 
Trochlear surface of the femur, the smooth depres- 
sion forming the anterior part of the articular surface of 
the condylea, for articulation with the patella. 
II. n. A trochlear muscle or nerve ; a troch- 
learis. 
Also trochlearu. 
trochlearifl (.roi-.e..') ,,; p.. trorktor,* 
rases 
rus, in man the site "of the insertion of the sub- (-*) [NL. (sc. musculM) : see 
scapularis muscle. 8ee trochiter, and cut un- '^fa**^*" 1 leornerve - 
toAtaft? [< trod** + -.X,,i.] One of the tr^hlear^Jrok'le-^ri), . and ,, 
small snags or points surmounting the antlers 
trochozo6n(trok-6-zo'on),M. [NL.,<Gr.i. .. 
wheel, + fv", animal.] Any member of the 
Tr<icho:oa, considered as hypothetical ancestral 
forms of annelids and mollusks. Stand. .\<ii. 
Hist., I. 236. 
The Balanogloaaus occupies an Intermediate position 
between the worms and the Chordata. It has originated 
from a trockozoiin which acquired some features In com- 
mon with worms. Nature, XLII. M. 
trochus (tro'kus), n. [< L. trorktu, ML. also 
trocim, hoop, ML. also wheel, top, < Gr. rpoxtf. 
t < 
of the stag. Hoicell. 
trochinian (tro-kin'i-an), a. 
trochisk (tro'kisk), H. [< OF. Irochisqite = Pg. 
troehiseo, trociwo = It. trochiscu = G. trochigk, 
< L. trocltiscus, a pill, troche, < Gr. r/;rv'o-Kof, a 
small wheel, a small disk or ball, pastil, troche, 
dim. of rporof, a round cake, a pill : see tro- 
i-lnia, Irochei.] A troche. 
1 would have trial made of two other kinds of bracelets, 
for comforting the heart and spirits : the one of the trnekM 
of vipers, made Into little pieces of beads ; for since they 
[NL. (B. 
rpojof, a 
gamopet- 
alous plants, of the order Ejiacridacta and tribe 
St<n>hcHeie. It Is characterized by a ten-celled ovary, 
and a drupaceous fruit with five to ten one-seeded nntleta. 
The 8 species are natives of Australia. They hear petioled 
polymorphous leaves, either scattered, two-ranked, or 
somewhat whorled. The small flowers form axillary or 
terminal splkelet*. T. thym(falia, a small Tasmanian 
shrub, is cultivated under the name of irheelteed. T. lau- 
rina is the beech- or brush-cherry of New South Wales 
and Queensland, a tree reaching 20 or 40 feet high, with 
tough fine-grained wood, used for turning. 
r the orig. verb) E. 
troeUmu, inichisk, trochee, trochil, trocliilu*, 
trochanter. truck*, truckle, etc. See especially 
fror/K-'andfi-McA-l.] If. Awheel. Kailey, 1733. 
J2. A round lump. Bailey. 1733. 3. [cap.} 
having a regular conic 
form with flat base, 
oblique and rhombic 
aperture, and a horny 
do great gixxl inwards, especially for pestilent agues, it is trochoid (tro'koid), n. and n. [= F. trochoide, 
like they will be effectual outwards, where they may be 
applled in greater quantity. There would be trochudc 
likewise made of snakes, whose flesh dried is thought to 
have a very opening and cordial virtue. 
Bacon, Nat. Hint. (ed. MontaguX $ 965. 
Ood finds out a way to Improve their evils to advantage ; 
and teaches them, of these vipers, to make sovereign trea- 
cles and safe and powerful trwhitee* [read troctiittkc*]. 
/;/'. //"". Balm of (Jili-ad. xvii. t 4. 
trochite (tro'kit), n. [< Gr. rpo^oc, a wheel, + 
-ifc>2.] One of the disks or wheel-like joints of 
the stem of an encrinite ; a wheelstone, screw- 
stone, or entrochus. [Rare or obsolete.] 
trochiter (trok'i-ter), n. [An arbitrary variant 
of troclKi liter.] The greater tuberosity of the 
head of the humerus, in man the site of the in- 
< (lr. -poxoetttK, round like a wheel, < rpoxk, a 
wheel, + fMof, form.] I. a. 1. In geom., tro- 
choidal. 2. In anat., rotating or revolving like 
a wheel ; pivotal, as an articulation ; trochoidal : 
applied to that kind of rotatory arthrosis in 
which a part revolves to some extent upon an- 
TrtNjiMi mixypkitius. 
operculum of many whorls ; top-shells. T. tan- 
jihintu and T. obelutcia are examples. Some of the spe- 
cie- grow to a large size, are handsomely marked, and 
when cut and polished show an extremely brilliant nacre. 
See also cuts under aperculum, radula, and top-thell. 
A Scotch form of truck*. 
other, as the head of the radius in the lesser tTOCk (trok), v. A Scotcl 
sigmoid cavitv of the ulna in pronation and troco (tro ko), n. [< *'!>'"'>. " truck t ablp 
supination of 'the forearm, or the atlas about to play on" (Stevens. 1706): see truck*.] An 
the odontoid process of the axis in shaking the old English game, formerly known as law, 
head. 3. In conch., top-shaped, like a shell of 
the genus Trochux; conical with a Hat base; of 
or related to the Trochidfe. 
H. M. 1. In geom., a prolate or curtate cycloid 
or curve traced by a point in fixed connection 
liilliiird.i. It Is played on a lawn with wooden balls 
and a cue ending In a spoon-shaped iron projection. In 
the center of the green there la an Iron ring moving on i 
pivot, and the object Is to drive the ball through the ring. 
Points are also made by caroming that Is, by the strik- 
ing of two balls in succession with the player's own ball. 
sertionof the supraspinatus.iufraspinatus, and ^'ith!' but, 'not "generally "oVthe circumference trod (trod), . [< ME. trod (cf. Norw. trod, a 
teres minor muscles. See trochin, and cut under - ** -?- " -i-i.* T wnvnrnuthi 
of, a wheel which rolls upon a right line. If 
the point is outside the circumference, the tro- 
trochiterian (trok-i-te'ri-an), n. [< trochiter + cnoi) j hag i OO p s; if inside, it has waves. See 
-mil.] Of or pertaining to the trochiter: as, the r y r loid. 2. In anat., a rotatory or pivotal 
triH-liili-riiiH fossa (adepression upon the trochi- j o i n t ; diarthrosis rotatorius; cyclarthrosis. 
ter for insertion of the infraspinatus muscle). 3 j n fo neH , t a top-shell, or some similar shell ; 
trochitic (tro-kit'ik), a. [< trochite + -ic.] Of any memD er of the Trocliida. 
the nalm-o of a trochite; pertaining to a tro- trochoidal (tro'koi-dal), a. [< trochoid + -al.] 
chite. 1. Pertaining to a trochoid; partaking of the 
trochlea (trok'le-ii), it. ; pi. trocMcx (-e). [NL., na t vire o f a trochoid: as, the trochoidal curves, 
< L. trtH-lilfit. Imi'lin. a pulley, sheaf, block, ML. gucn as tne epicycloid, the involute of the cir- 
also a windlass, roller, small wheel, < Gr. rpoxt- c \ 6< an d the spiral of Archimedes. 2. In anat. 
/.iu. -riioxMa, Tpoxrtia, a pulley, a block; cf. an( j fgneh., same as trochoid. 
Tpoxa/.uf, running, < iv>n, run: see trochux. t ro chometer (tro-kom'e-ter), n. KGr.rpo^of, 
Hence ult. E. tmofcfo.J In (Hint, and ~ool., a a wn eel, + fierfim; a measure.] Same as tre- 
pulley or pulley-like arrangement of parts, af- r /,,, m ,7, , . 
fortling a smooth surface upon which another Trochosphaera (trok-o-sfe'r*), n. [NL.: see 
part glides. SpeeitUnlly (a) A fibrous loop in the trocliosiilicrc.] If. A 'supposed genus of roti- 
^%^"to^^<S& '?. as T TT^i" l f ? philippine8 - 
eyeball. The line of traction of the muscle Is by this Semper. 2. [I. c.] A trochosphere. 
way or path much trodden), < AS. treda* (pret. 
tried), etc., tread: see tread, and cf. trade, 
trade*.] Tread; tramp; track. [Obsolete or 
Scotch.] 
This U the worst o' a' mishaps, 
TIs war than death's fell trod. 
Tarrat, Poems, p. 59. (Joraiwon. ) 
Hot trod, the pursuit or tracings of moss-troopers or 
reavers; literally, a fresh track or footstep. 
The pursuit of Border marauders wa followed by the 
Injured party and his friends with blood-houndu and bu- 
gle-horn, and was called the hot-trod. He was entitled. If 
his dog could trace the scent, to follow the invaders Into 
the opposite kingdom, a privilege which often occasioned 
bloodshed. Scott, L. of L. M.. v. 39, note. 
trodden (trod, trod'n), p. a. [Pp. of 
Trampled; crushed; hence, insult- 
Is much used in composition with 
element : as, down-frwW< " . 
Then to the well-trod stage anon. 
If Jonson's learned sock be on. 
MilUm, L' Allegro, I- 131. 
