diff --git a/README.md b/README.md
index 20ce6477..0309691a 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,15 @@ An extensive project documentation including installation instructions and user'
 guide can be found on [mp-units GitHub Pages](https://mpusz.github.io/units).
 
 
+## Terms and Definitions
+
+This project uses the official metrology vocabulary defined by the ISO and BIPM.
+Please familiarize yourself with those terms to better understand the documentation
+and improve domain-related communication and discussions. You can find essential
+project-related definitions in [our documentation's "Glossary" chapter](https://mpusz.github.io/units/glossary.html).
+Even more terms are provided in the official vocabulary of the [ISO](https://www.iso.org/obp/ui#iso:std:iso-iec:guide:99:ed-1:v2:en)
+and [BIPM](https://jcgm.bipm.org/vim/en).
+
 ## TL;DR
 
 `mp-units` is a compile-time enabled Modern C++ library that provides compile-time dimensional