steam + -punk, by analogy with cyberpunk, coined by science-fiction writer Kevin Wayne Jeter (born 1950) in a 1987 letter to the magazine Locus in response to a review of his book Infernal Devices published the same year (see the quotation below).
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.