whākōkī
1. (noun) catalyst.
Ko te whākōkī: He matū ka whakatere ake, ka whakangāwari ake rānei i tētahi tauhohe matū. Heoi anō, kāore te whākōkī e tauhohe, kāore hoki e whakapaungia (RP 2009:454). / Catalyst: A substance which makes a chemical reaction faster or easier to carry out, but is not involved in the reaction, or does not get used up (RP 2009:454).
whākōkī nakunaku
1. (noun) digestive enzyme.
Kei roto i te wai nakunaku ka whakaputaina e te repe tiaki huka, ko te whākōkī ngako, koia hei wāwāhi i te ngako i roto i te kōpiro (RP 2009:343). / The digestive juice produced by the pancreas contains lipase, an enzyme which breaks down the lipids in the intestine (RP 2009:343).