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Confined with a rope.

TETH'I-DANS, n. [plur. Gr. τεθυς.]

An order of acephalous molluscan animals, covered by a tunic, and not by a shell.

TETH'YS, n. [Gr.]

A gelatinous animal of the nudibranchiate gastropode tribe, having an envelop or mantle that extends above and beyond the head, fringed or undulated at the margin. Kirby.

TET'RA-CHORD, n. [Gr. τετταρα, four, and χορδη, a chord.]

In ancient music, a diatessaron; a series of four sounds, of which the extremes, or first and last, constituted a fourth. These extremes were immutable; the two middle sounds were changeable. Cyc.

TET'RAD, n. [Gr. τετρας, the number four.]

The number four; a collection of four things.

TET-RA-DAC'TYL, n. [Gr.]

An animal having four toes. Kirby.

TET-RA-DAC'TYL-OUS, a. [Gr. τετρα and δακτυλος.]

Having four toes.

TET-RA-DI-A-PA'SON, n. [Gr. τετρα, four, and diapason.]

Quadruple diapason or octave; a musical chord, otherwise called a quadruple eighth or twenty-ninth. Cyc.

TET-RA-DRACH'MA, n. [Gr. τετρα and δραχμη.]

In ancient coinage, a silver coin worth four drachmas, 3s. sterling, or 66 2/3 cents; the drachma being estimated at 9d. sterling, or 16 2/3 cents.


Having six stamens, four of which are uniformly longer than the others.

TET-RA-DY-NAM'I-AN, n. [Gr. τετρα and δυναμις, power, strength.]

In botany, a plant having six stamens, four of which are longer than the others.

TET'RA-GON, n. [Gr. τετραγωνος; τετρα, for τεσσαρες, four, and γωνια, an angle.]

  1. In geometry, a figure having four angles; a quadrangle; as a square, a rhombus, &c.
  2. In astrology, an aspect of two planets with regard to the earth, when they are distant from each other ninety degrees, or the fourth of a circle.


  1. Pertaining to a tetragon; having four angles or sides. Thus a square, a parallelogram, a rhombus, and a trapezium, are tetragonal figures.
  2. In botany, having prominent longitudinal angles, as a stem. Martyn.


The quadrature of the circle. Cyc.

TET'RA-GYN, n. [Gr. τετρα, four, and γυνη, a female.]

In botany, a monoclinous or hermaphrodite plant having four styles.


Relating to a monoclinous or hermaphrodite plant which has four styles.

TET-RA-HE'DRAL, a. [See Tetrahedron.]

  1. Having four equal triangles.
  2. In botany, having four sides. Martyn.

TET-RA-HE'DRON, n. [Gr. τετρα, four, and εδρα, side.]

In geometry, a figure comprehended under four equilateral and equal triangles; or one of the five regular platonic bodies of that figure.

TET-RA-HEX-A-HE'DRAL, a. [Gr. τετρα, four and hexahedral.]

In crystalography, exhibiting four ranges of faces, one above another, each range containing six faces.

TET-RAM'E-TER, n. [Gr. τετρα, four, and μετρον, measure.]

In ancient poetry, an iambic verse consisting of four feet, found in the comic poets. Cyc. A verse consisting of four measures or eight feet. Ash.

TET-RAN'DER, n. [Gr. τετρα, four, and ανηρ, a male.]

In botony, a rnonoclinous or hermaphrodite plant, having four stamens.


Being monoclinous or hermaphrodite, and having four stamens.


A bird belonging to the tribe of which the Tetrao is the type.

TET-RA-PET'AL-OUS, a. [Gr. τετρα, four, and πεταλον, leaf.]

In botany, containing four distinct petals or flower leaves; as, a tetrapetalous corol. Martyn.


A combination of wax, resin, lard and pitch, composing an ointment.