1. LPPM - Noun
2. LPPM - Proper noun
LPPM
Initialism of London Platinum and Palladium Market.
LPPM (uncountable)
(metal casting) Initialism of low-pressure permanent mold.
As a result, current photonic masts will be replaced with Low-Profile Photonics Masts (LPPM) which resemble traditional submarine periscopes more closely. Source: Internet