English dictionary · noun

triode

A thermionic valve containing an anode, a cathode, and a control grid; small changes to the charge on the grid control the flow from cathode to anode, which makes amplification possible.

Meaning and definitions

1. A thermionic valve containing an anode, a cathode, and a control grid; small changes to the charge on the grid control the flow from cathode to anode, which makes amplification possible.

Connected roots

• tri-

  three

• -ody

  song

Explore the word family

These words share a recorded root connection. A shared root is a learning clue; it does not establish every step in a word’s history.

• tragedy

  a play or event dealing with tragic events and an unhappy ending

• trilogy

  A set of three connected works—usually dramas, literary pieces, films, or musical compositions—all related by theme, characters, or setting.

• melody

  a sequence of single notes that is musically satisfying

• trillion

  A statistic formed by a player playing some number of minutes, but recording no stats.

• triangular

  Shaped like a triangle.

• electrode

  The terminal through which electric current passes between metallic and nonmetallic parts of an electric circuit.

• trident

  A three-pronged spear somewhat resembling a pitchfork.

• triad

  A grouping of three.

• tripod

  a three-legged stand for supporting a camera or other apparatus

• diode

  An electronic device that allows current to flow in one direction only; used chiefly as a rectifier.

• cathode

  An electrode, of a cell or other electrically polarized device, through which a positive current of electricity flows outwards (and thus, electrons flow inwards). It can have either a negative or a positive voltage with respect to anode of the same polarized device (depending on whether the device is a load or a source, respectively).

• anode

  An electrode, of a cell or other electrically polarized device, through which a positive current of electricity flows inwards (and thus, electrons flow outwards). It can have either a positive or a negative voltage with respect to cathode of the same polarized device (depending on whether the device is a load or a source, respectively).

• tricycle

  A cycle with three wheels, powered by pedals and usually intended for young children.

• triennial

  Happening every three years.

• trilateral

  Having three sides

• triplicate

  Made thrice as much; threefold; tripled.

• trigeminal

  Of or pertaining to the trigeminal nerve (the fifth cranial nerve).

• triplex

  Having three parts; triple or threefold.

• triangulate

  Synonym of triangular.

• triforce

  A shape composed of three equilateral triangles arranged in such a manner that a fourth triangle of identical size, but pointing the opposite direction, could fit between them.

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