A substance or device that alkalizes something, or a person who alkalizes materials (American spelling).
From alkalize + -er suffix (American English agent noun). The -er suffix converts verbs into nouns naming the agent performing the action.
Whether British 'alkaliser' or American 'alkalizer,' these words prove that English splits into regional varieties but still understands itself perfectly—they're just spelled differently, like cousins with slightly different accents!
Complete word intelligence in one call. Free tier — 50 lookups/day.