正せい触しょく媒ばい

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Meanings

1

noun

positive catalyst

Technical term in chemistry for a catalyst that increases the rate of a reaction. Contrasts with 負触媒 (negative catalyst/inhibitor).

負ふ触しょく媒ばい
負触媒 is a negative catalyst (inhibitor) that slows down a reaction, while 正触媒 is a positive catalyst that speeds it up.
触しょく媒ばい
触媒 is the general term for catalyst; 正触媒 specifies a positive catalyst.

Compound of 正 (positive) and 触媒 (catalyst).