rosters

1. 1
   noun

   Plural of roster.

   The league requires that all rosters be finalized by Friday.

   She compared the two rosters to see which players had been added.

   Note

   One spelling does two jobs here: the same word is also the present-tense verb. As a noun it covers every kind of list a roster can be: team rosters, class rosters, a muster roll, the shift rosters of a workplace. In mathematics a roster is a bracketed list of a set's elements. A determiner such as the, two or all before it marks the noun.

2. 2
   verb

   Third-person singular simple present of roster.

   The supervisor rosters staff across three shifts each week.

   Whoever rosters the drivers tends to favor the early starters.

   Note

   The verb behind this form is transitive, so it always takes a direct object: a supervisor rosters staff, a dispatcher rosters drivers. It goes only with a singular subject (he rosters, the agency rosters), while a plural subject takes the bare form (they roster). Mathematics has its own use: to roster a set is to list its elements inside brackets.

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