Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Previous word: tatty
Next word: tau cross
Definition of: tau
(tou) noun
1. The nineteenth letter in the Greek alphabet: (Τ,τ) equivalent to the English t. As a numeral it denotes 300.
2. A lepton having a mass approximately 20 times that of a muon. [<Gk.]
Comment about this word, ask questions, or add new information about this topic: