Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The 19th letter of the Greek alphabet.

from The Century Dictionary.

  • noun In ichthyology, the toadfish, Batrachus tau.
  • noun In entomology: A beetle.
  • noun A phalænid moth.
  • noun A fly.
  • noun In heraldry, same as tau-cross.

from the GNU version of the Collaborative International Dictionary of English.

  • noun The nineteenth letter (Τ, τ) of the Greek alphabet, equivalent to English t.
  • noun (Zoöl.) The common American toadfish; -- so called from a marking resembling the Greek letter tau (τ).
  • noun See Illust. 6, of Cross.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The name of the letter T/τ in the Greek, Hebrew and ancient Semitic alphabets, being the nineteenth letter of the Classical and Modern Greek, the twentieth letter of Old and Ancient Greek.
  • noun A Τ-shaped sign or structure; a St. Anthony's cross, sometimes considered as a sacred symbol.
  • noun physics, dated A tau meson, now usually known as a kaon.
  • noun physics An unstable heavy lepton, which decays into a muon or electron; a tauon.
  • noun biology A type of protein used to stabilise microtubules.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the 19th letter of the Greek alphabet

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Greek, of Phoenician origin; see tww in Semitic roots.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek ταῦ (tau).

Examples

  • Alzheimer's is marked by deposits of beta-amyloid protein in the brain, and knotty protein structures in the nerves themselves called tau tangles.

    The Age News Headlines

  • Alzheimer's is marked by deposits of beta-amyloid protein in the brain, and knotty protein structures in the nerves themselves called tau tangles.

    The Sydney Morning Herald News Headlines

  • Among the possible advances in early detection are chemical tracers, some of which tag clumps of a sticky substance in the brain called amyloid, and others that mark amyloid and a protein called tau—both thought to contribute to the disease.

    Push to Detect Alzheimer's Earlier

  • Eventually another small protein, called tau, also starts to crystallize in this way to form "tangles."

    Connecting the Pieces of the Alzheimer's Puzzle

  • The crucial protein, called a tau protein, is a normal part of the brain and central nervous system.

    New Hope For Early Diagnosis And Treatment Of Alzheimer’s | Impact Lab

  • The first one, the electron, was discovered in 1897, and the last one, this thing called the tau neutrino, in the year 2000.

    Brian Cox on CERN's supercollider

  • We discovered that these fibers are made of a protein called tau and then we discovered that we could pull these fibers apart.

    CNN Transcript Jul 31, 2008

  • The first one, the electron, was discovered in 1897, and the last one, this thing called the tau neutrino, in the year 2000.

    Brian Cox on CERN's supercollider

  • The first one, the electron, was discovered in 1897, and the last one, this thing called the tau neutrino, in the year 2000.

    Brian Cox on CERN's supercollider

  • This process, called tau phosphorylation, enables the microtubules to unbind and then bind again, allowing brain cells to connect and reconnect with other brain cells.

    Die Trying

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