Ksi

Greek Letter Ksi (Ξι - Ξ)

In Semitic a crossmark stood for the "t" sound, but in Greek it ended up as the letter "chi". For some reason, the Greeks decided to use three bars for the "ks" double consonant. The Romans didn't need the "kh" sound, so they used the "chi" for their "ks" sound, which is now the english "X"

"Ξ" Letter in mathematics and in science

Ξ represents:

• the grand canonical ensemble found in statistical mechanics.
• a type of baryon

ξ represents:

• a random variable.
• the extent of a chemical reaction
• coherence length
• the damping coefficient

Greek words with "ξ"

ξινός, ταξίδι