Avihimsā, ahimsā, avihesā: harmlessness, nonviolence, absence of cruelty. The Pali term for ahimsa. The thought of harmlessness or non-cruelty; avihimsā-vitakka is one of the three constituents of right motivation sammā-sankappa, i.e. the 2nd factor of the 8-fold path see: magga. In the several lists of elements dhātu appears also an element of harmlessness avihesā-dhātu, in the sense of an irreducible elementary quality of Noble thought, speech & behaviour. See Dhp. 225, 261, 270, 300.
Maha Thera Nyanatiloka. Manual of Buddhist Terms and Doctrines, Buddhist Publication Society, first edition 1952.