daypart

Etymology

day + part

noun

1. (television, radio) A part of the day in which a type of radio or television program apropos for that time period is aired.
   Prime time is the daypart with the most viewers.

verb

1. (television, radio, transitive) To divide the broadcasting day of (a station) into periods airing different types of material.
   Much like TV and radio, programming on the Station will be dayparted. Mornings will contain more music news, afternoons will have a heavy promotional focus on Streamland's and SonicNet's Addicted to Noise Web sites, and nights will focus on live entertainment. 1998-03-14, Ed Christman, “Trans World Earnings Set Record in '97”, in Billboard, volume 110, number 11, page 111
   A lot of Top 40 stations were heavily dayparted, so softer stuff only got played in the daytime, or harder stuff only got played at night. 2005-06-02, Florence Henderson Had A Mullet [username], “Re: Billboard top 100 of 1983”, in alt.culture.us.1980s (Usenet)
2. (television, radio, transitive) To assign (material) to such a period.
   Like most R&B stations, rap is dayparted after 6 p.m. but shunned between the hours of 9 p.m. and midnight, when the station runs its quiet storm show. 1994-06-25, Phyllis Stark, “Community Involvement Sends WCKX To Top”, in Billboard, volume 106, number 26, page 106
   WMGI's new format, of which I heard a mere 20 minutes last night around 8, seemed to be brighter and much more uptempo. I imagine they've got the youngest stuff (i.e., the rap) dayparted into evenings only, and are being much less adventurous mornings. 1995-01-04, Jim Grey, “Terre Haute Radio News 1-1-95”, in rec.radio.broadcasting (Usenet)