What does catalyst mean?
Catalyst, in chemistry, any substance that increases the rate of a reaction without itself being consumed. Enzymes are naturally occurring catalysts responsible for many essential biochemical reactions.
How do you pronounce this word catalyst?
How is an pronounced?
It’s very unusual, but we can and then their pronunciation changes. A becomes a (ay), and an becomes an (aan). And if we’re saying the letter of the alphabet, we say Ay.
How do you pronounce amylases?
How do we pronounce Chyme?
How is pharynx pronounced?

David Nilsen is the former editor of Fourth & Sycamore. He is a member of the National Book Critics Circle. You can find more of his writing on his website at davidnilsenwriter.com and follow him on Twitter as @NilsenDavid.