Devdictionary Best Practices: Building a Comprehensive and Useful Resource

Most engineering teams eventually accumulate their own private language — internal names for services, acronyms for processes, shorthand for architectural decisions made two years ago by people who've since left. That vocabulary is useful right up until a new hire joins, or a cross-team project starts, or six months pass and even the original team forgets what "the orange pipeline" refers to. The fix isn't to stop coining shorthand — teams will always do that — it's to build a living internal glossary that captures it before it evaporates.

Want expert help putting this into practice? Dev Dictionary can guide you through it.

Why every growing team eventually needs its own glossary

Small teams get away without documentation because the knowledge lives in people's heads and everyone who needs it is in the same room. That stops working somewhere between five and fifteen people, when new hires start outnumbering the people who remember why a decision was made, and when the team starts splitting into sub-groups that don't hear each other's conversations anymore. At that point, terms that used to be common knowledge — what "the ingest layer" means, what "a red build" actually implies for deploy policy, what your team means by "staging" versus what another team means by it — start causing real friction: repeated questions in Slack, onboarding docs that assume context nobody new actually has, and meetings where half the room nods along without really following.

A glossary doesn't eliminate jargon — jargon is often a legitimate compression of a complex idea into a short handle, and that's valuable. What a glossary does is make the compression reversible: anyone can look up the handle and get the full idea back. That reversibility is what turns shorthand from a liability into an asset.

Start with the terms that cause the most recurring confusion, not an exhaustive list

Related: DevDictionary Best Practices: How to Use It Effectively in Development.

The instinct when building a glossary is to try to document everything at once — every service name, every acronym, every internal tool. That instinct kills the project before it starts, because comprehensive documentation is a huge, boring, never-finished task, and nobody sustains motivation for it. A better starting point is much narrower: look at the last month of Slack threads, onboarding questions, and support tickets, and pull out the handful of terms that keep generating "wait, what does that mean?" questions.

Those recurring points of confusion are the highest-leverage entries you can write, because they're already proven to cause friction — you're not guessing at what might be confusing, you're documenting what demonstrably is. A practical way to source the initial list:

• Ask new hires from the last six months what terms they had to ask someone to explain.
• Search your team chat for phrases like "what does X mean" or "what's the difference between."
• Look at your most-forwarded onboarding messages — anything explained more than twice by different people is a glossary candidate.

Ten well-chosen entries that solve real confusion beat a hundred entries nobody asked for.

Structure every entry the same way

Consistency matters more than depth for a resource like this. If every entry has a different shape — some are one line, some are three paragraphs, some have examples and some don't — readers can't build a habit of scanning it quickly, and contributors don't know what "done" looks like for a new entry. Settle on a simple, repeatable template and hold every entry to it. A structure that works well for most teams:

• Term — the exact word or phrase people actually say out loud.
• Plain-English meaning — one or two sentences, no jargon inside the jargon explanation.
• Example — a real or realistic sentence showing the term used in context.
• Where it's used — which systems, teams, or documents this term shows up in, so a reader knows when it's relevant to them.

This template is deliberately small. The goal isn't to write a textbook entry for every term — it's to give someone enough to unblock themselves in under thirty seconds. If a term genuinely needs a deep explanation, link out to a design doc or an architecture page rather than expanding the glossary entry itself; the glossary's job is to be the fast lookup, not the full reference.

Assign clear ownership so the resource doesn't go stale

See also: Devdictionary Best Practices for Developers.

The most common failure mode for internal glossaries isn't that nobody starts one — it's that someone starts one, it's accurate for three months, and then it quietly rots as the system evolves and nobody updates it. A glossary with wrong information is often worse than no glossary at all, because people trust it and get misled instead of asking a person and getting a correct, current answer.

The fix is ownership, not effort. Someone — a rotating role, a specific team, even a single engineer who cares about documentation — needs to be explicitly responsible for the glossary's accuracy, the same way someone owns an on-call rotation. That doesn't mean one person writes every entry; it means one person (or a small group) is accountable for noticing drift, prompting updates when terminology changes, and rejecting entries that no longer match reality.

Make it easy to find

A glossary that exists but that nobody can locate provides zero value, no matter how well it's written. It needs to live where people already are, not in a separate tool they have to remember exists and go looking for. Link it directly from your README, from your wiki's home page, and from your onboarding checklist — the three places a confused or new team member is most likely to already be looking. If your team uses a chat tool with a pinned-messages or bookmarks feature, pin it there too.

Discoverability compounds: the more places the glossary is linked from, the more often people stumble into it naturally instead of needing to remember it exists, and the more often it gets used — which, in turn, makes people more likely to add to it when they notice a gap.

Treat it as living documentation with a review cadence

Because a glossary describes a moving target — your systems, your team's language, your architecture — it needs a review cadence, not a one-time writing sprint. A lightweight approach that works for most teams is a short quarterly pass: the owner (or rotating owner) spends thirty minutes checking whether any entries are outdated, whether any recently retired systems still have entries implying they're active, and whether any new recurring confusion has shown up that deserves a new entry.

It also helps to build small habits into existing rituals — a reminder in retro to flag any term that caused confusion that sprint, or a note in the pull request template asking whether new terminology was introduced. General-purpose references like Dev Dictionary are useful for common industry terms that don't need reinventing, which frees your internal glossary to focus on what's actually specific to your team: your service names, your acronyms, your architecture decisions — the vocabulary nobody outside your walls could look up anywhere else.