the system of marking products with the date when they were packed
code dating in American English
noun
the practice of placing a code indicating the date and site of packaging on certain products, as canned goods
Word origin
[1970–75]This word is first recorded in the period 1970–75. Other words that entered Englishat around the same time include: New Age, consciousness-raising, good old boy, postmodernism, relational database