from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The 19th letter of the Greek alphabet. See Table at alphabet.
- n. An elementary particle of the lepton family, having a mass about 3,550 times that of the electron, a negative electric charge, and a mean lifetime of 3 × 10-13 seconds. See Table at subatomic particle.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. 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.
- n. A Τ-shaped sign or structure; a St. Anthony's cross, sometimes considered as a sacred symbol.
- n. A tau meson, now usually known as a kaon.
- n. An unstable heavy lepton, which decays into a muon or electron; a tauon.
- n. A type of protein used to stabilise microtubules.
from the GNU version of the Collaborative International Dictionary of English
- n. The nineteenth letter (Τ, τ) of the Greek alphabet, equivalent to English t.
- n. The common American toadfish; -- so called from a marking resembling the Greek letter tau (τ).
from The Century Dictionary and Cyclopedia
- n. In ichthyology, the toadfish, Batrachus tau.
- n. In entomology: A beetle.
- n. A phalænid moth.
- n. A fly.
- n. In heraldry, same as tau-cross.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the 19th letter of the Greek alphabet
Alzheimer's is marked by deposits of beta-amyloid protein in the brain, and knotty protein structures in the nerves themselves called tau tangles.
Eventually another small protein, called tau, also starts to crystallize in this way to form "tangles."
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.
The crucial protein, called a tau protein, is a normal part of the brain and central nervous system.
The first one, the electron, was discovered in 1897, and the last one, this thing called the tau neutrino, in the year 2000.
We discovered that these fibers are made of a protein called tau and then we discovered that we could pull these fibers apart.
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.
Martin Perl's discovery of the tau was the first sign that a third "family" of fundamental building blocks existed.
The new lepton was denoted by the Greek letter tau, which is the first letter of the word triton, (which means the third); the discovered lepton being the third charged lepton, after the electron and the muon.
The discovery of the tau was the first sign that a third family of fundamental building blocks exists.