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The name "Spam" was chosen in the 1930s when the product, whose original name—"Hormel Spiced Ham"—was far less memorable, began to lose market share. The name was chosen from multiple entries in a naming contest. A Hormel official once stated that the original meaning of the name Spam was "Shoulder of Pork and hAM". According to writer Marguerite Patten in Spam – The Cookbook, the name was suggested by Kenneth Daigneau, brother of the Hormel vice president and an actor.

Other explanations of the origin of the term include the acronym "Specially Processed American Meat", "Spiced Pork And haM", "Specially Processed Army Meat", and "SPAre hAM"; there are also some less-than-serious explanations, such as "Synthetically Produced Artificial Meat", "Some Parts Are Meat", "Someone's Pigs Are Missing", or "Stuff Posing As Meat". The current official explanation is the SP and AM were taken from "SPiced hAM" to win a $100 prize!

The humorous radio show Ask Dr. Science claimed it is an acronym for "Scientifically Produced Animal Matter", a product of the food synthesis experiments of the 1950s, whose "closest living relative was the Velveeta, a kind of synthetic jellyfish."

According to Hormel's trademark guidelines, Spam should be spelled with all capital letters and treated as an adjective, as in the phrase SPAM luncheon meat. However, barring having entered into a contract requiring one to do so, no one is legally obliged to follow such trademark guidelines. As with many other trademarks, such as Lego or Kleenex, people often refer to similar meat products as "Spam".
by ben the butcher January 17, 2006
Unsolicted emails, most of which offer penis extensions under wordings to avoid filters, such as "exp and y00r man - rod" or "giv e her good lu ving with huu uuge man - st i ck"
According to all my spam emails, each extending my penis up to 4" , I could potentially have a penis approximately 4 miles long.
by Digital_Messiah July 03, 2004
The AIDS equivalent for the internet. No known cures.
Spam is pretty useless.
by Keynon May 03, 2005
spam stands for
"I spamed the perverts the other day, and now they're really pissed off!"
by Santa November 13, 2002
1. Canned meat. Extremely cheap (considering)
2. Unsolicited mail/e-mail sent out in mass quantities. Usually not even addressed by name to the person who receives it.
3. In gaming, refers to a player who throws grenades indiscriminately, many at a time. Generally an issue in Team Fortress. Although lately has been expanded to include any overused gun/combo/move/tactic/etc.
"Grilled Spam is great."
"I get over thrity spam mails a week in my hotmail account."
"Way to spam the room buddy. You throw enough nades that time?"
by TheFeniX March 21, 2003
To rapidly post the same line in a chat room consecutively
Uber: Quit Spamming Chat Noob
Noob: u hav no lyfe
Noob: u hav no lyfe
Noob: u hav no lyfe
Noob: u hav no lyfe
Noob: u hav no lyfe
Noob: u hav no lyfe
Noob: u hav no lyfe
by Jediknight4587 May 29, 2005
Spiced Ham
Manufactured around the world by licensee of the HORMEL company. The exact recipe is a closey guarded secret.
Very popular in small Pacific Island countries where real meat is hard to find. In 1990 over 2 million Kilograms of spam were sold in New Zealand, Fiji, Samoa, the soloman islands, Rarotonga, tonga etc...
My god, this spam tastes good...can I have a little more spam with my Taro please
by Gavin Knight January 05, 2004