committee formed by a special-interest group to raise money for their favorite political candidates
"The environmental advocacy group launched its own pac to support local candidates who backed stricter pollution regulations."
Initialism of programmable automation controller.
"The new PAC replaced the older relay system to automate the factory assembly line."
In plain English: A pac is an old-fashioned term for something that calms you down, though it rarely means anything specific anymore since people mostly use short forms like "paco."
"The dog found his favorite pac in the kitchen drawer."
Alternative form of Pac. (abbreviation of Pacific)
"The weather map showed a storm system moving across the pac region."
In plain English: Pac is short for Pacific, which refers to things related to the huge ocean between North and South America on one side and Asia and Australia on the other.
"The pac man was very cute and small for his age."
Abbreviation of Pacific. (Pacific Ocean)
"Linguists classify the proto-language of certain Native American groups as Pac within the broader Algonquian family."
Alternative form of Pac. (abbreviation of Pacific)
Proto-Algic (compare PA, PAn)
The word "pac" is a shortened form of "shoepac," which was a popular brand name for athletic shoes that entered common usage through clipping. It traveled into English as slang derived from this specific commercial term rather than originating from an older root meaning the same thing.