About Insiders Lingo

Every trade, lab and control room runs on two vocabularies: the formal words written into specs and standards, and the shop talk that never makes it onto paper. Insiders Lingo defines both.

Walk onto a paving crew, a survey launch or a turbine deck and you will hear words that sound like English and mean something else entirely. A finisher's bird bath, a railroader's big hole, a lube tech's demulsibility: each one carries a precise meaning that insiders share and outsiders miss. This dictionary collects those words, 3,521 of them across 33 fields including tribology & lubrication, railroading, hydrography & charting, and explains each in plain English.

What is in every entry

A one-line meaning you can read at a glance.
A fuller explanation: how it works, how it is measured and why the people who use it care.
Heard on the job: a line showing how insiders actually use the word.
Links to the words around it: related terms, words it gets confused with and the same word in other fields.

Standard terms and shop talk

Every entry carries one of two labels. Standard terms are the formal vocabulary of the field, the words you find in specifications, test methods and textbooks. Shop talk is everything else: nicknames for tools and parts, clipped forms, crew slang and regional names for the same thing. Both matter. The standard term gets the job specified; the shop talk gets it done.

The periodic table

Each field has a two-letter symbol and a number, like an element. The 33 fields are grouped into seven families:

Materials & Surfaces: Tribology & Lubrication, Corrosion & Cathodic Protection, Heat Treating, Thermal Spray, Powder Coating, Adhesives, Refractories & Furnace Linings
Making & Joining: Welding, Brazing & NDE, Fasteners & Threads, Gear Engineering, Valves & Fittings, Machine Shop Slang
Power & Climate: Electrotechnology, Electricians' Slang, HVAC & Refrigeration, Boilers & Burners, Nuclear Safety & Radiation Protection
Light & Electronics: Lighting & Color Science, Photonics & Lasers, Fiber Optics, Printed Circuit Boards, Paper Optics & Testing
Built Environment: Concrete & Cement, Asphalt Paving, Geosynthetics, Sealants & Waterproofing, Nonwovens
Sea & Rail: Hydrography & Charting, Tides & Water Levels, Railroading
Measurement & Lab: Vacuum Engineering, Engineering Statistics, Measurement Uncertainty

Who it is for

New hires and apprentices learning the language of their trade. Engineers crossing into a neighbouring discipline. Buyers, writers, students and anyone who has nodded along in a meeting and wondered what a word really meant.

Help build it

The best entries come from people who use the words every day. If your crew says something we have not covered, add a word. If an entry does not match how the word is used where you work, tell us.