diff --git a/glossary.tex b/glossary.tex
index 95193e8..3b1cb0b 100644
--- a/glossary.tex
+++ b/glossary.tex
@@ -1,6 +1,7 @@
 \newabbreviation{wt}{WT}{changeme}
 \newabbreviation{dso}{DSO}{data structure oriented}
-\newabbreviation{cp}{LP}{Lexical Proof Morphology}
+\newabbreviation{lp}{LP}{Lexical Proof Morphology}
+\newabbreviation{ero}{ERO}{Pāṇinian (or elsewhere) rule ordering}
 \newabbreviation{le}{LEI}{lexical entry interface}
 \newabbreviation{stc}{STC}{Separationist Taxonomy-Based Constructive Proof Morphology}
 \newabbreviation{gpsg}{GPSG}{Generalized Phrase Structure Grammar}