timespan
How long something lasts
A timespan is a length or stretch of time: The project covers a timespan of three years.
The word emphasizes duration rather than specific dates—how long something lasts rather than when it occurs.
Also spelled as two words: time span.
Measure of extent
- periodPunctuation ending sentences
- intervalDuration between two points
- termFixed period or word
- stretchPull to extend
spell · phase · stint · cycle · bout · run · continuance · interlude
Fixed period or word
- trimesterThirteen-week span
- semesterHalf academic year
- quarterOne of four parts
- seasonYearly division or series
session · cycle · module · academic year · fiscal year · calendar · rotation · schedule
Lasting very briefly
- transientTemporary, soon departing
- fleetingPassing very quickly
- momentaryLasting very briefly
- briefShort in duration
short-lived · impermanent · passing · evanescent · provisional · interim · temporary · transitory
Current geological epoch
- PleistoceneAncient glacial geological period
- CambrianEarliest Paleozoic period
- PrecambrianEarliest geological eon
- DevonianGeologic period, 419-359 million years ago
Carboniferous · Permian · Triassic · Jurassic · Cretaceous · Paleozoic · Mesozoic · Cenozoic
Sustained effort capacity
- permanenceQuality of lasting indefinitely
- timelessnessFreedom from temporal decay
- perpetuityInfinite continuation of time
- immortalityExemption from death
eternity · lasting · indefinite · prolonged · extended · sustained · unending · interminable
Before documented civilization
- NeolithicFinal prehistoric stone-tool era
- Bronze AgeEarly metalworking civilization period
- Iron AgePost-bronze historical period
- MedievalOf the 5th-15th centuries
Renaissance · Enlightenment · Victorian · Contemporary · colonial · postwar · ancient · feudal
length
Measure of extent
stretch · spell · phase · stint · cycle · bout · run · continuance · interlude · session
term
Fixed period or word
season · session · cycle · module · academic year · fiscal year · calendar · rotation · schedule · timetable
ephemeral
Lasting very briefly
brief · short-lived · impermanent · passing · evanescent · provisional · interim · temporary · transitory · finite
Holocene
Current geological epoch
- PleistoceneAncient glacial geological period
- CambrianEarliest Paleozoic period
- PrecambrianEarliest geological eon
Devonian · Carboniferous · Permian · Triassic · Jurassic · Cretaceous · Paleozoic · Mesozoic · Cenozoic · Quaternary
endurance
Sustained effort capacity
- permanenceQuality of lasting indefinitely
- timelessnessFreedom from temporal decay
- perpetuityInfinite continuation of time
immortality · eternity · lasting · indefinite · prolonged · extended · sustained · unending · interminable · infinite
prehistoric
Before documented civilization
- NeolithicFinal prehistoric stone-tool era
- Bronze AgeEarly metalworking civilization period
- Iron AgePost-bronze historical period
Medieval · Renaissance · Enlightenment · Victorian · Contemporary · colonial · postwar · ancient · feudal · imperial
sequence
Ordered succession of elements
decades · millennia · ages · annals · chronicles · records · succession · lineage · antiquity · prehistory
timespaninstant
Briefest unit of time
moment · point in time · split second · flash · point
time, span, expanse, timely, temporal, untimely, timeline, timeliness, timetables