Time slot or timeslot? Meaning and spelling

A time slot is a set period of time reserved for something: an appointment, a delivery window, a class or a TV show. The standard spelling is two words: time slot. Timeslot as one word is common in software and booking systems but is less standard in edited writing.

Examples

Spelling

SpellingStatus
time slotStandard, dictionary form
timeslotCommon variant, especially in apps and code
time-slotOccasional, mostly before a noun ("time-slot booking")

Related words: appointment, booking, window, shift, block, session. Scheduling across time zones? The meeting planner finds a time slot that works for everyone, and the time zone converter translates one.

Questions people ask

Is timeslot one word?

The standard form is two words, "time slot". "Timeslot" is a common variant, especially in software.

What does time slot mean?

A period of time set aside for a particular activity, such as an appointment, a broadcast or a delivery.

Sources

Related: words and idioms about time · "clock it" meaning · what is time?

Last updated October 21, 2026.