Dictionary Definition :
Definition[1]
:
心行
Definition[2]
:
caitasika
(Sanskrit; Pāli cetasika). Earlier form of the word caitta. Both forms are found in Sanskrit commentarial literature. See also cetasika.
Source
:
A Dictionary of Buddhism, Oxford University Press, 2003, 2004 (which is available in electronic version from answer.com)
Definition[3]
:
caitasika: Thought-concomitant.
Source
:
Sarvastivada Abhidharma, Sanskrit-English Glossary, by Bhikkhu KL Dhammajoti