Tri*no"mi*al (?), n. [Pref. tri- + -nomial as in binomial: cf. F.
trinôme.] (Math.) A quantity consisting of three terms, connected by
the sign + or -; as, x + y + z, or ax + 2b - c2.
Tri*no"mi*al, a. (Math.) Consisting of three terms; of or pertaining to
trinomials; as, a trinomial root.
Tri*nom"i*nal (?), n. & a. [Pref. tri- + L. nomen, nominis, name: cf.
L. trinominis three- named.] (Math.) Trinomial.
||Tri*nu"cle*us (?), n. [Pref. tri- + nucleus.] (Paleon.) A genus of
||Lower Silurian trilobites in which the glabella and cheeks form three
||rounded elevations on the head.
||
Tri"o (?), n. [It., fr. L. tres, tria, three: cf. F. trio, from the
Italian. See Three.] 1. Three, considered collectively; three in
company or acting together; a set of three; three united.
The trio were well accustomed to act together, and were linked to each
other by ties of mutual interest.
Dickens.
2. (Mus.) (a) A composition for three parts or three instruments. (b)
The secondary, or episodical, movement of a minuet or scherzo, as in a
sonata or symphony, or of a march, or of various dance forms; — not
limited to three parts or instruments.
{ Tri*ob"o*lar (?), Tri*ob"o*la*ry (?), } a. [LL. triobolaris, fr. L.
triobolus a piece of three oboli, Gr. &?;. See Tri-, and Obolus.] Of
the value of three oboli; hence, mean; worthless. [Obs.]
It may pass current . . . for a triobolar ballad.
Cheyne.
Tri*oc"tile (-k"tl), n. [Pref. tri- + octile.] (Astrol.) An aspect of
two planets with regard to the earth when they are three octants, or
three eighths of a circle, that is, 135 degrees, distant from each
other. Hutton.
||Tri*œ"ci*a (-"sh*), n. pl. [NL. See Triœcious.] (Bot.) The third
||order of the Linnæan class Polygamia.
||
Tri*œ"cious (-shs), a. [Pref. tri- + Gr. &?; house.] (Bot.) Having
three sorts of flowers on the same or on different plants, some of the
flowers being staminate, others pistillate, and others both staminate
and pistillate; belonging to the order Triœcia.
Tri"ole (tr"l), n. [See Triolet.] (Mus.) Same as Triplet.
Tri*o"le*in (tr*"l*n), n. [Pref. tri- + olein.] (Physiol. Chem.) See
Olein.
Tri"o*let (tr"*lt), n. [F. triolet. See Trio.] A short poem or stanza
of eight lines, in which the first line is repeated as the fourth and
again as the seventh line, the second being, repeated as the eighth.
Brande & C.
||Tri*on`y*choi"de*a (?), n. pl. [NL. See Trionyx, and -old.] (Zoöl.) A
||division of chelonians which comprises Trionyx and allied genera; —
||called also Trionychoides, and Trionychina.
||
||Tri*on"yx (?), n. [NL., fr. Gr. &?; (see Tri-) + &?; a claw.] (Zoöl.)
||A genus of fresh-water or river turtles which have the shell
||imperfectly developed and covered with a soft leathery skin. They are
||noted for their agility and rapacity. Called also soft tortoise,
||soft-shell tortoise, and mud turtle.
||
The common American species (Trionyx, or Aspidonectus, ferox) becomes
over a foot in length and is very voracious. Similar species are found
in Asia and Africa.
Tri"or (?), n. (Law) Same as Trier, 2 and 3.
Tri*ox"ide (?), n. [Pref. tri- + oxide.] (Chem.) An oxide containing
three atoms of oxygen; as, sulphur trioxide, SO3; — formerly called
tritoxide.
Trip (?), v. i. [imp. & p. p. Tripped (?); p. pr. & vb. n. Tripping.]
[OE. trippen; akin to D. trippen, Dan. trippe, and E. tramp. See
Tramp.]
1. To move with light, quick steps; to walk or move lightly; to skip;
to move the feet nimbly; — sometimes followed by it. See It, 5.
This horse anon began to trip and dance.
Chaucer.
Come, and trip it, as you go, On the light fantastic toe.
Milton.
She bounded by, and tripped so light They had not time to take a steady
sight.
Dryden.
2. To make a brief journey or pleasure excursion; as, to trip to
Europe.
3. To take a quick step, as when in danger of losing one's balance;
hence, to make a false step; to catch the foot; to lose footing; to
stumble.
4. Fig.: To be guilty of a misstep; to commit an offense against
morality, propriety, or rule; to err; to mistake; to fail. "Till his
tongue trip." Locke.
A blind will thereupon comes to be led by a blind understanding; there
is no remedy, but it must trip and stumble.
South.
Virgil is so exact in every word that none can be changed but for a
worse; he pretends sometimes to trip, but it is to make you think him
in danger when most secure.
Dryden.
What? dost thou verily trip upon a word?
R. Browning.
Trip, v. t. 1. To cause to stumble, or take a false step; to cause to
lose the footing, by striking the feet from under; to cause to fall; to
throw off the balance; to supplant; — often followed by up; as, to trip
up a man in wrestling.
The words of Hobbes's defense trip up the heels of his cause.
Abp. Bramhall.
2. Fig.: To overthrow by depriving of support; to put an obstacle in
the way of; to obstruct; to cause to fail.
To trip the course of law, and blunt the sword.
Shak.