/usr/share/applications/org.gnome.Dictionary.desktop is in gnome-dictionary 3.18.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | [Desktop Entry]
Name=Dictionary
Comment=Check word definitions and spellings in an online dictionary
Keywords=word;synonym;definition;spelling;
Exec=gnome-dictionary
Terminal=false
Type=Application
Icon=accessories-dictionary
StartupNotify=true
Categories=GNOME;GTK;Office;Dictionary;
NotShowIn=KDE;
X-GNOME-DocPath=gnome-dictionary/gnome-dictionary.xml
X-GNOME-Bugzilla-Bugzilla=GNOME
X-GNOME-Bugzilla-Product=gnome-dictionary
X-GNOME-Bugzilla-Version=3.18.0
DBusActivatable=true
X-Ubuntu-Gettext-Domain=gnome-dictionary
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