diff --git a/harper-core/dictionary.dict b/harper-core/dictionary.dict
index 4baf8cdf0..c8d887c1c 100644
--- a/harper-core/dictionary.dict
+++ b/harper-core/dictionary.dict
@@ -6155,7 +6155,7 @@ Luz/Og
 Luzon/Og
 Lviv/Og
 Lvov/Og
-LyX/g
+LyX/Og              # GUI document processor based on LaTeX
 Lyallpur/O
 Lycra/Ng
 Lycurgus/Og
@@ -9922,8 +9922,6 @@ Tbilisi/Og
 Tc/g
 Tchaikovsky/Og
 Te/Og
-TeX/O
-TeXes
 Teasdale/Og
 Technicolor/NJg
 Tecumseh/Og
@@ -9980,10 +9978,12 @@ Teuton/NJgS
 Teutonic/JNg
 Tevet/Og
 Tex/Og
+TeX/Og              # Typesetting engine
 Texaco/g            # company
 Texan/JNgS
 Texarkana/Og
 Texas/Og
+TeXes
 Th/NOg              # thorium
 Thackeray/Og
 Thad/Og
@@ -52850,6 +52850,7 @@ Colemak/NJg
 CommonMark/g
 CompUSA             # retailer
 Conda/Og            # package manager for Python and R
+ConTeXt/Og          # General purpose document processor
 Corretto/Sg
 Coursera/Og
 Crowdsignal/Og
@@ -53014,6 +53015,7 @@ LVM/Sg
 Labriola/OSg
 LanguageTool/g      # grammar checker
 Laravel/g
+LaTeX/Og            # Typesetting system, based on TeX engine
 Lato/ONg
 LeetCode/Og         # programming contest
 Lenovo/Og           # computer manufacturer
@@ -53025,7 +53027,7 @@ Logotherapy/Sg
 Longreads/Og
 LoRA/NwSg           # low-rank adaptation
 Lua/Og              # programming language
-LuaTeX/Og
+LuaTeX/Og           # TeX-based typesetting engine
 MCP/Ng              # model context protocol
 MMO/NgS             # massively multiplayer online
 MMX/Ng              # multimedia extension
@@ -53353,6 +53355,7 @@ nullish/J
 olds/~              # common in phrasing such as "twenty year olds"
 pandoc/Sg           # !! please check and comment !! elsewhere we have Pandoc
 pastebin/NgS
+pdfTeX/Og           # Program, extension for TeX engine
 pentest/VSdG
 pentester/NSg       # penetration tester
 pentesting/NmgV6
@@ -53398,6 +53401,7 @@ waitlist/NgS
 watchOS/Og
 whitespace/~NSg     # dictionaries prefer: white space
 wikilink/~NSg       # !! please check and comment !! elsewhere we have Wikilink
+XeTeX/Og            # TeX typesetting engine
 z-buffer/NgS
 
 # Experimental multi-word entries