Learn how to say Systemic correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word systemic:
another word for systematic (sense 1), systematic (sense 2)
(physiology) (of a poison, disease, etc) affecting the entire body
(of a pesticide, fungicide, etc) spreading through all the parts of a plant and making it toxic to pests or parasites without destroying it
a systemic pesticide, fungicide, etc