Crossword Clue: Letter after sigma
Here's the answer to the Letter after sigma crossword clue, with an explanation and where it has appeared.
Definition & answer: TAU
"Letter after sigma" points to TAU, a 3-letter entry that starts with T and finishes on U and carries 2 vowels. Because every square it occupies also belongs to a down or across answer crossing it, you can often back into TAU from the letters around it rather than the clue alone.
Origin & meaning
Tau follows sigma in the Greek alphabet and names a math constant equal to two pi. Its vowel-friendly shape suits grids.
Common usage
Compact, vowel-friendly answers such as TAU are a constructor's staple: they slot into a 3-square space and play nicely in both directions. Solvers who recognize it on sight save real time on the daily puzzle.
Crossword trivia
Tau belongs to the small vocabulary of words that appear constantly in grids. Because it's only 3 letters, editors can drop it almost anywhere, which is why regular solvers know it on sight.
Stuck on this clue?
Stuck on "Letter after sigma"? Don't force it — solve the clues crossing this slot instead. One or two intersecting letters usually make TAU obvious. Working from the crossings is the single most useful habit for getting faster.
This clue in different puzzles
The clue "Letter after sigma" is just one way to arrive at TAU. Across different puzzles and editors you may see the same answer clued as "Greek T". Recognizing that a single answer can wear many clues is one of the fastest ways to level up as a solver.
Example sentences
- "Tau is the kind of answer that clicks the moment you spot one letter."
- "Seeing 'Letter after sigma' in the clue list, an experienced solver pencils in TAU almost immediately."
- "Once the T was confirmed by the crossing word, TAU was the only entry that fit."