triable 
triable (tri'a-bl), . [Also tryablf; < try + 
-ulilc.] 1. Capable of being tried or tested; 
suited for experiment. 2. Subject to legal 
trial; capable of being brought under judicial 
prosecution or determination. 
He being irresponsible, but his Ministers answerable for 
his acts, impeachable by the Commons and triable by the 
Peers. Brougham, 
Many Debtors elsewhere confln'd do by Habeas Corpus 
remove into this Prison, which is the proper place of Con- 
finement in all Cases tryable in the Queen's Bench Court. 
Quoted in Ashton's Social Life in Reign of Queen Anne, 
[II. 245. 
triableness (tri'a-bl-nes), i. The state of be- 
ing triable. 
Triacanthidae (tri-a-kan'thi-de), n. pi. [NL., 
< TriiictnitliuK + -idle.] Afamily of scleroderm 
plectognath fishes, typified by the genus Triu- 
canthus. They have a well-developed first dorsal fln of 
several spines, and ventral fins with large spines. They 
inhabit tropical (chiefly the Indian) seas. 
Triacanthinae (tri"a-kan-thi'ne), n.pl [NL., < 
Ti'iticantlius + -iiiss.J A subfamily of triacan- 
thoid fishes, typified by the genus Triacanthus, 
having incisorial teeth in both jaws and a long 
narrow caudal peduncle. 
Triacanthodes (tri"a-kan-thd'dez), n. [NL. 
(Bleeker, 1858), < Triacanthus, q. v., + Gr. f<<%, 
form, aspect.] A genus of triacanthoid fishes, 
typical of the subfamily Triacanthodinee. 
Triacanthodinae (tri-a-kan-tho-di'ne), n.pl. 
[NL., < Triacanthodes + -inss.] A subfamily of 
triacanthoid fishes, typified by the genus Tria- 
canthodes, with conical teeth in both jaws and 
an oblong caudal peduncle. 
triacanthoid (tri-a-kan'thoid), n. and a. I. . 
A fish of the family Triacatithidse. 
II. a. Of, or having characters of, the Tri- 
acanthidse. 
Triacanthus (tri-a-kan'thu8),. [NL. (Cuvier), 
< Gr. T/jelf (rpi-), three, + aKawa, spine: see 
ncantha.] A genus of scleroderm fishes, typi- 
6462 
merit or radical. 3. In music, a chord of three 
tones, including a given tone with its major 
or minor third and its perfect, augmented, or 
diminished fifth. A triad is named from the 
given tone or root: as, triad of G; dominant 
triad. See chord, 4. Also Man. 4. In Wvlxli 
lit., a form of composition characterized by 
the arrangement of the contents in groups of 
three. The earliest specimens of these triads belong to 
the twelfth century. The method was continued for sev- 
eral centuries in Wales, but was not imitated elsewhere 
except in a few instances in Ireland. 
5. In myth., an intimate association of three 
kindred or correlated deities, sometimes con- 
'-1?- 
vm m 
\ 
Triacanthus brtvirostris. 
cal of the family Triactinthidfe smA the subfam- 
ily Triacanthinss, and including such species as 
7'. bretrirostris. 
triace (tri'a-se), H. [< Gr. rpeif (rpi-), three, + 
iuai, a point.] A trihedral solid angle or sum- 
mit. 
triachenium (tri-a-ke'ni-um), . ; pi. triaclie- 
nia (-a). [NL., < 'L. ires (tri-), three, + NL. 
acheninm.] In 1>ot., a fruit which consists of 
three acheuia. Also spelled triakenium. 
Triacinae (tri-a-si'ne), n. pi. [NL., < Triads + 
-inie.] A subfamily of galeorhinoid sharks 
with small trenchant teeth and spiracles, typi- 
fied by the genus Triads. Also called Triakiaiia. 
Triacis (tri'a-sis), H. [NL. (Miiller and Henle, 
1841, as Triakis), < Gr. rpeif (rp<-), three, + <i/u'f, 
a point.] A genus of galeorhinoid sharks, 
typical of the subfamily Triacinse. 
triaclet, An obsolete form of treacle. 
triacontahedral (tri-a-kon-ta-he'dral), a. [< 
Gr. Tpidnovra, thirty (=' L. triijinta = fc. thirty), 
+ idpa, seat, base, + -al.] 1. Having thirty 
sides. 2. In crystal., bounded by thirty 
rhombs. 
triaconter (tri'a-kon-ter), 11. [< Gr. TPIO.KOV- 
Tqpt/s, thirty-oared, < rpiaKovra, thirty, + *apeiv, 
row.] In Gr. antiq., a vessel of thirty oars: 
triact (tri'akt), a. [< Gr. rpeif (rpt-), three, + 
iutrig, ray.] Having three rays, as a sponge- 
spicule. See cut under sponf/e-spicitle. 
triactinal (tri-ak'ti-nal), a. [< triactine + -all 
Having three rays, as a sponge-spicule ; tri- 
act. 
triactine (tri'ak-tin), a. [< Gr. rpetf (rpi-), 
three, + auric; (auriv-), ray.] Having three 
rays, as a sponge-spicule ; triact. 
triad (tri'ad), n. [= F. Made = It. triade = 
W. Mad, < L. Mas (triad-), < Gr. rpi6( (rpiad-), 
the number three, < rpeit; (rpi-), three: see 
three.] 1. A union or conjunction of three ; a 
group or class of three persons or things closely 
related; a trinity. 2. In cliem., an element or 
radical which will combine with three atoms 
of a monad element or radical ; a trivalent ele- 
ien, Mut, and Kln.n-.ii. Cavo-rilievo 
aijjide of the Kameseum. 
sidered as having the relationship of father, 
mother, and child, and forming a characteristic 
conception in some religious systems, as that 
of ancient Egypt. 6. In morphology, a ter- 
tiary unit of organization resulting from inte- 
gration of an aggregate of dyads. See dyad, 3. 
7. An indeterminate product of three vec- 
tors Harmonic triad, in mime, a major triad. 
Harmonic triads, in math. See harmonic. 
triad-deme (tri'ad-dem), . A colony or aggre- 
gate of undifferentiated triads. See dyad- 
deme. Knci/c. Brit., XVI. 843. 
triadelphous (tri-a-del'fus), a. [< Gr. rpelc; 
(rpi-), three, + ade'A^of, a brother. Of. rprnfet- 
0a<, the three sisters.] In bot., having the sta- 
mens more or less coalescent in three sets : 
said of an androacium. 
triadic (tri-ad'ik), a. and . [< Gr. r/waduuif, < 
rpidf (rpinf-), a triad: see triad."] I. a, 1. Of 
or pertaining to a triad ; constituting or con- 
sisting of a triad or trinity. 
A triad of activities corresponding to the triadic nature 
of God. The Independent, June 26, 1862. 
2. In chem., trivalent; triatomic. 3. In anc. 
pros. : (a) Comprising three different rhythms 
or meters : as, the triadic epiploce. (6) Consist- 
ing of pericopes, or groups of systems, each of 
which contains three unlike systems: as, a 
triadic poem. 4. In the Gr. Ch., addressed to 
or in honor of the Trinity: as, a triadic canon. 
II. 11. A sum of products of three vectors. 
triadist (tri'ad-ist), n. [< triad + -ist.] A 
composer of a triad or triads. See triad, 4. 
triaene (tri'en), . [< NL. trisena, < Gr. rpiatva, 
a three-pronged fish-spear, a three-pronged 
fork, a trident, < rprif (rpi-), three : see three.] 
Among sponge-spieules, a cladose rhabdus 
which bears at one end three secondary rays or 
cladi diverging at equal angles from one an- 
other. Various modifications of the tritene have received 
specific names. A trisene with recurved arms like a grap- 
nel is an anatrtene; with porrect arms, a protrisme; 
with arms at right angles with the shaft, an orthotrisme ; 
with bifurcate aims, a dichntrieene ; with trifurcate, a 
trichotrixne. When the cladome, or set of cladi, arises 
from the center of the rhabdome, a centrotrixne results ; 
when from both ends of the rhabdome, an amphitriane. 
triage (tri'aj ; F. prou.tre-azh'), n. [< F. Mage, 
< trier, sort out, try: see try.] That which is 
culled, picked, or thrown out ; specifically, in 
English use, the refuse of whole coffee ; broken 
coffee-beans and chaff. 
The broken beans [of coffee], or triage, must also be 
separated by hand from the dust, 
Spans' Encyc. Manuf., I. 705. 
triakisicosahedral (tri"a-kis-i"k6-sa-he'dral ), 
. [< triakisicosaliedron + -a/.] Pertaining or 
related to a triakisicosahedron. 
triakisicosahedron(tri"a-kis-i"ko-sa-he'dron), 
n. [< Gr. Tpt&af, three' times (< T/H if (rpi-), 
three), + einoai, twenty, + edpa, seat, base.] A 
solid formed by erecting on each face of a Pla- 
tonic icosahedron a pyramid of such an alti- 
tude as to make all the summits regular. It is 
trial 
reciprocally related to the Archimedean trun- 
cated dodecahedron. See solid, II., 2, fig. 20. 
triakisoctahedral (tri"a-kis-ok-ta-he'dral), a. 
[< triakitioctahcdnin + -/.] Pertaining or close- 
ly related to the triakisoctahedron. 
triakisoctahedron (tri"a-kis-ok-ta-he'dron), i. 
[< Gr. rpiaKir;, three times (< rpei( (rpi-), three), + 
OKTU, eight, + etipa, seat, base.] A solid formed 
by erecting on each face of the regular octa- 
hedron a pyramid of such an altitude as to ren- 
der all the summits regular. It is reciprocally 
related to the Archimedean truncated cube. 
See solid, II.. 2, fig. 14. 
triakistetrahedral (tri"a-kis-tet-ra-he'dral), 
a. [< trialtistetrahedron 4- -al.] Pertaining or 
closely related to the triakistetrahedron. 
triakistetrahedron (tri"a-kis-tet-ra-he'dron), 
. [< Gr. rptdnif, three times (< rptif (rpt-), three), 
+ Terpa- (for Tcropa, Tcaaapa), four, + iipa, seat, 
base.] A solid formed by erecting on each face 
of a regular tetrahedron a pyramid of such alti- 
tude that all the summits become regular. It 
is reciprocally related to the Archimedean trun- 
cated tetrahedron. See solid, II., 2, fig. 12. 
trial (tri'al), . [Formerly also tryal; < OF. 
trial, trial. < trier, try: see try.] 1. The act of 
trying or making a test of something; a put- 
ting to proof by examination, experiment, use, 
exercise, or other means. 
All thy vexations 
Were but my trials of thy love, and thou 
Hast strangely stood the test. 
Shak., Tempest, iv. 1. 6. 
2. The act of trying or making an effort; a 
seeking to do or effect something ; a determin- 
ing essay or attempt. 
Thy fear, said Zephon bold, 
Will save us trial what the least can do 
Single against thee. Hilton, P. L., iv. 855. 
3. A test of superiority ; a contest ; a compe- 
tition. 
But let your fair eyes and gentle wishes go with me to 
my trial. Shak., As you Like it, i. 2. 199. 
4. The state of being tried; probation by the 
experience or suffering of something; subjec- 
tion to or endurance of affliction. 
Others had trial of cruel mockings and scourgings. 
Heb. xi. 36. 
That which purifies us is trial, and trial is by what is 
contrary. Milton, Areopagitica. 
5. That which tries or afflicts; a trying circum- 
stance or condition; a hardship; an affliction. 
O, but he was a conspicuous trial in our lot a source 
of manifold woe to us all ! J. T. Fields, Underbrush, p. 69. 
6. In law, the judicial investigation and de- 
termination of the issues between parties; 
that part of a litigation which consists in the 
examination by the court of the point in con- 
troversy, the hearing of the evidence, if any, 
and the determination of the controversy, or 
final submission of the cause for such deter- 
mination. Whether the word includes the prelimi- 
nary steps of the hearing, such as the impaneling of the 
jury, and the conclusion reached or the rendering of the 
decision, depends on the connection in which it is used. 
"When used of a criminal cause, trial commonly means 
the proceedings in open court after the pleadings are fin- 
ished and it is otherwise ready, down to and including the 
rendition of the verdict. Not extending, on the one hand, 
to such preliminary steps as the arraignment and giving 
in of the pleas, it does not comprehendjrjn the other hand, 
a hearing on appeal." (Bishop.) The modes of trial now 
in use in the United States and England are by a judge 
with a jury, by a judge without a jury, or by a referee or 
similar officer appointed for the purpose. In England as- 
sessors or assistants sometimes sit with the judge or ref* 
eree. See issue, judgment, jury, nummary, verdict, etc. 
7. Something upon or by means of which a test 
is made ; an experimental sample or indicator ; 
a trial-piece. 
Captaine Newport being dispatched, with the tryals of 
Pitch, Tarre, Glasse, Frankincense, Sope ashes. 
Quoted in Capt. John Smith's Works, I. 200. 
And who would to Liberty e'er prove disloyal, 
May his son be a hangman, and he his first trial. 
Burns, The Toast. 
Certain " pyrometrical beads " or trials . . . indicated 
the temperature by their tint. Encyc. Brit., XX. 182. 
8. In ceram., one of the pieces of ware which 
are used to try the heat of the kiln and the 
progress of the firing of its contents. In the fir- 
ing of painted porcelain the trials are often painted in 
carmine, a colorwhich responds delicately to the degree of 
heat to which it is subjected. The trials are observed 
through small openings closed with transparent talc. 
General Court of Trials. See peneral.'Sew trial, a 
second or subsequent trial allowed to a party unsuccessful 
on the original trial, on the ground of error or injustice. 
On or upon trial, on probation ; as an experiment, in 
order to more lasting arrangements. 
If my husband had been alive when you'd come to 
preach upon trial, he'd have been as good a judge of your 
gifts as Mr. Nuttwood. George Eliot, Felix Holt, iv. 
