Could take a page out of the biologist's book. "what's this thing?" Transcriptase - enzyme (-ase) which transcribes - DNA to RNA. "What about this" Reverse transcriptase - does the reverse of transcriptase.

Angiotensin-converting enzyme - does exactly what it says on the tin. You can lex it even further:

- Angio - heart (from ango, vessel)

- Tens - from hypertension, vis tendo, tendere, to stretch.

- (-in) - suffix associated with polypeptides:

- Convertere - turn around, from:

- Con - with

- Vert - turn

- En - inside

- Zyme - from zume/zymē - leavened, loosely, biological thing which causes leavening

It just makes so much sense! Lexemes are so cool. Like digging into linguistic source code.