karma refers not only to an initial act, whether benevolent or malicious, but also to the reaction it produces (pleasant or unpleasant in accordance with the original act), which ripens for the actor either in this life or a future one.
Bryant defines karma etymologically and technically as the entire action-reaction continuum whose fruits ripen across lifetimes, embedding the agent in the potentially eternal cycle of saṃsāra.
, The Yoga Sutras of Patanjali: A New Edition, Translation, and Commentary, 2009thesis