'pro-prostatic' is formed from the prefix 'pro-' (from Latin 'pro', meaning 'for' or 'in favor of') combined with 'prostatic' (from Greek 'prostátēs', referring to the prostate gland).

'prostátēs' (Greek) → Late Latin 'prostata' → Middle English 'prostate' gave English 'prostate' and the adjective 'prostatic'; the prefix 'pro-' has been attached to create the compound adjective 'pro-prostatic'.

Initially 'prostátēs' meant 'one who stands before' and was later used to name the gland; 'prostatic' came to mean 'pertaining to the prostate', and 'pro-prostatic' developed to mean 'in favor of or supportive of the prostate'.