Meaning of 刺戟剤激 in Japanese

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Definition of 刺戟剤激

ざい(zai) 【剤】

(n-suf) medicine; agent; (chemical) substance; drug; dose
イースト菌はパンを膨らませる際の作用剤だ。
Yeast acts as an agent in making bread rise.

しげき(shigeki) 【刺激 ·刺戟 ·剌激】

(n, vs) stimulus; impetus; incentive; encouragement; motivation; provocation
私はその講義には本当に刺激を受けた。
That lecture really stimulated me.

げき(geki) 【激】