AHD The American Heritage Dictionary of Indo-European Roots.
AN Aṅguttara Nikāya (chapter and sutta)
BHSD Buddhist Hybrid Sanskrit Dictionary (Edgerton)
BU Bṛhadāranyka Upaniṣad. (sometimes BĀU)
CSED Mayahofer. Kurzgefaβtes etymologisches Wörterbuch des Altindischen = Concise Sanskrit Etymological Dictionary.
CPD Critical Pali Dictionary (Trenckner). online
CST Chaṭṭha Saṅgāyana Tipitaka (Version 4.0). online
CU Chāndogya Upaniṣad
Dhp Dhammapada
DN Dīgha Nikāya (sutta and verse)
DOP Dictionary of Pāli (Cone)
DOPN Dictionary of Pali Names. online
JR Jayarava's Raves
MN Majjhima Nikāya (sutta and verse)
MW Monier-William's Sanskrit-English Dictionary.
OEtD Online Etymology Dictionary.
OIEL Online Indo-European Lexicon.
P. Pāli
PED PTS Pali-English Dictionary (Rhys Davids & Stede). online
PTS Pali Text Society
PTS A Aṅguttara Nikāya (book and page in the PTS edition)
PTS D Dīgha Nikāya (book and page in the PTS edition)
PTS M Majjhima Nikāya (book and page in the PTS edition)
PTS S Saṃyutta Nikāya (book and page in the PTS edition i.e. Upanisa Sutta, PTS S ii.29)
S. Sanskrit
Sn. Sutta-Nipāta
SN Saṃyutta Nikāya (samyutta and sutta: i.e. Upanisa Sutta, SN 12.23)
Vin Vinaya, PTS edition.
Vism Visuddhimaga