What is the correct spelling for TATAYEANUS?

"Tatayeanus" is a misspelling, but based on context, the correct suggestions could be "tachycardia" or "tachyon". "Tachycardia" refers to an abnormally fast heartbeat, while "tachyon" is a hypothetical particle that travels faster than light. Depending on the intended meaning, these alternatives may offer better clarity and accuracy.