Why most teams do not have a glossary
Ask a technical writing team whether they have a glossary, and you’ll usually get a version of “we used to.” Someone built one during a big documentation push two years ago. It covered the acronyms and terms that existed at the time. Nobody has opened it since, because nobody owns keeping it current, and a glossary that’s wrong is worse than no glossary at all — a new hire who trusts a stale entry ends up more confused than one who knew to ask a colleague.
The problem isn’t that glossaries aren’t valuable. It’s that writing one from scratch is unrewarding work: you’re not writing anything new, you’re just transcribing decisions that already exist somewhere in your heads and your documents. That makes it exactly the kind of task that keeps getting deprioritized in favor of anything that produces visible new content, right up until a new hire’s first week reveals how much shared vocabulary was never written down anywhere.
Start from the document, not from memory
The fastest way out of a blank page is to not start with one. Every document your team has already written contains a partial glossary, encoded in every acronym expansion anyone bothered to write: “the Service Level Objective (SLO),” “Recovery Point Objective (RPO),” and so on. Pull every one of those pairs out of your existing documentation and you have a first-draft glossary that took zero minutes of original writing — someone already did the work, they just did it once, in passing, inside a sentence instead of a table.
This is also a self-correcting process in a way that writing a glossary from memory isn’t. If two different documents expand “CI” two different ways, extracting both surfaces the conflict immediately, in a way that skimming each document individually never would. A document that expands the same acronym two conflicting ways is a defect worth fixing regardless of the glossary — but building the glossary is often the moment a team actually notices the conflict exists.
What belongs in a glossary entry
A glossary entry needs exactly two things to be useful: the term, and its expansion or definition. Everything past that is optional, and most teams over-build their first attempt by adding fields nobody maintains — “owner,” “last reviewed,” “related terms” — that go stale even faster than the definitions do, because now there are three things to keep current instead of one.
Resist the urge to include every acronym your team has ever used. A glossary that lists “API,” “URL,” and “HTTP” alongside your product’s actual domain-specific terms buries the entries a reader actually needs among ones nobody was confused about in the first place. The useful glossary is the one specific to your product and your team’s own shorthand — the common, industry-wide acronyms don’t need a place in it any more than “the” needs a dictionary entry pinned to your desk.
Keep it a byproduct, not a project
The glossaries that survive are the ones that update themselves as a side effect of writing documentation normally, not the ones that require a dedicated maintenance cycle. If expanding an acronym correctly on first use is already part of how your team writes — a habit, not a checklist item — then a glossary extracted from the current state of your docs is automatically current too, because the source it’s drawn from never went stale in the first place.
That’s the real payoff of treating acronym expansion as something worth checking automatically rather than something a style guide merely asks for: the checking and the glossary-building turn out to be the same task viewed from two angles. Once a tool can tell you an acronym was never expanded, it can just as easily tell you what it was expanded to wherever it was — and a table of every acronym plus its expansion is precisely what a glossary is.
A glossary catches drift a spellchecker never will
There’s a second reason to keep a glossary current beyond helping new hires: it’s the only place that makes vocabulary drift visible across a large set of documents. A spellchecker catches typos within one file. A glossary, built by scanning many files at once, catches something a spellchecker structurally cannot — the same three-letter acronym meaning two different things depending on which document you’re reading, or a shortened form of a term that only ever appears in one team’s docs and confuses everyone else. Neither of those is a spelling problem, and neither shows up until someone puts every definition next to every other one and looks for disagreements.
Export it and actually use it
A glossary that lives in a spreadsheet nobody opens is barely better than no glossary. Export it somewhere it’ll actually get read: a Markdown table dropped into your documentation’s landing page, or a CSV pulled straight into whatever internal wiki your team already checks. The format matters less than the location — put it where people already look, not where it’s tidiest to store.
Build your first draft in minutes, not a sprint
Run your existing documents through the acronym & abbreviation auditor and it will pull out every acronym it finds, along with whatever expansion the document already gives it, into a glossary table ready to copy as Markdown or CSV. It won’t replace the judgment call of deciding what belongs in your team’s official glossary — but it turns “write a glossary from scratch” into “edit a draft,” which is a far easier task to actually finish.