About Engineering English

Engineering English is an iOS vocabulary app that teaches the technical English terms engineers actually use at work — 7,806 terms across 20 engineering disciplines, with IPA pronunciation, example sentences and translations in 21 languages.

Who builds it

Engineering English is built by Emre Birinci, an independent iOS developer. You can find all of his apps on the App Store developer page. Questions and feedback are welcome at [email protected] — every message is read.

How the library is built

The library contains 7,806 terms in 20 discipline sets, ranging from 298 (Environmental Engineering) to 520 (Software Engineering) terms per discipline. Every entry follows the same editorial structure:

  • Definition — one to two sentences of clear technical English, written the way the term is used in standards, drawings and documentation. A term is never defined using itself.
  • Pronunciation — a full IPA transcription, plus audio and speech-recognition practice in the app.
  • Example sentence — a realistic 12–30-word engineering sentence using the term naturally, translated into all 21 languages.
  • Translations — the term in English, Turkish, French, German, Spanish, Chinese, Arabic, Portuguese, Russian, Japanese, Italian, Vietnamese, Hindi, Thai, Indonesian, Korean, Bengali, Dutch, Swedish, Finnish and Ukrainian. Where engineers in a language normally use the English term, the accepted technical form is kept.
  • Context and scenario — where the term is encountered on the job, and an AI conversation scenario that asks you to explain, identify or use it.

Usage-frequency ranking

Every term carries a usage-frequency rating from 1 to 10, assigned during curation: 9–10 for essential everyday terms, 7–8 for frequent ones, 5–6 for moderately common, and 1–4 for advanced or rare vocabulary. The app teaches higher-frequency terms first, and the free glossary pages on this site list each discipline's terms in that order — so the first words you learn are the ones you will actually hear in meetings.

Why we publish free glossaries

The 20 glossary pages on this site each show the 60 most frequently used terms of their discipline, free, with pronunciation and definitions. They are taken directly from the app's library, so you can judge the quality of the content before downloading anything.

Found an error in a definition or translation? Email [email protected] — corrections ship in app updates.