an independent federal agency that oversees the exchange of securities to protect investors
"The SEC recently issued a warning about the risks associated with unregistered cryptocurrency exchanges."
Second, ¹⁄₆₀ of a minute.
"The pilot announced that we would be landing in three seconds to avoid turbulence."
In plain English: Sec is an old-fashioned unit used to measure very small angles, like how many seconds of arc there are in a circle.
"The new security guard was checking every sec before locking the doors."
Usage: Use this noun to denote one-sixtieth of a minute when measuring time in fields like aviation or military operations where precision is critical. It functions as an uncountable quantity that typically appears with numbers rather than articles.
Initialism of Securities and Exchange Commission.
"The lawyer advised the client to file all required documents with the SEC before the deadline."
Derived from French, this abbreviation originates from the Latin saeculum, meaning an age or generation. It is commonly used to denote seconds in time measurements.