How to pronounce Cauchy

Cauchy is most commonly pronounced "koh SHEE" (/koʊˈʃiː/). This is the widely-used reading among engineers, though edge cases exist.

Two syllables. The 'ch' is French /ʃ/ (the 'sh' sound) and 'au' = /oʊ/, so it ends '-SHEE', never a hard 'ch' like 'church'. General American puts the stress on the SECOND syllable: koh-SHEE /koʊˈʃiː/ (per Wikipedia's US transcription and Dictionary.com). British English shifts stress to the FIRST syllable: KOH-shee /ˈkoʊʃi/ (the alt form) — so the stress is genuinely contested across dialects even though the consonants are agreed. Named after French mathematician Augustin-Louis Cauchy; English speakers meet it via the Cauchy distribution, Cauchy sequence, and Cauchy-Schwarz inequality. Routinely mangled as 'COW-chee' or 'CAW-chee' with a hard ch — both wrong.

Alternate readings you might hear:

• "KOH shee" /ˈkoʊʃi/

Source: Wikipedia — Augustin-Louis Cauchy

Pronouncing project and product names correctly avoids the small but persistent friction of being gently corrected during standups, conference Q&As, and team calls. Hearing the word a few times locks in the right reading better than reading IPA ever will. Pronounce is a community-maintained dictionary — every entry tagged with a confidence level and (where possible) a citable source.