Initialism. When applied to a "rocket-propelled grenade" it derives from Russian РПГ, initialism of ручной противотанковый гранатомёт, of which "rocket-propelled grenade" is a backronym.
Modern English dictionary
Explore and search massive catalog of over 900,000 word meanings.
Word of the Day
Get a curated memorable word every day.
Challenge yourself
Level up your vocabulary by setting personal goals.