span

span — noun

1. how long something continues to exist, work, or be available, measured from its

1.nounB1
Definition

how long something continues to exist, work, or be available, measured from its beginning to its end

Example

The average human attention span has become shorter in the digital age.

collocation: attention span

Faisal completed the entire project within a span of just three weeks.

grammar: a span of + time period

Common collocations
  • attention span
  • life span
  • concentration span
  • time span
  • short span of time
Synonyms
  • duration

    more technical or formal than 'span'; used in academic or scientific contexts

  • period

    broader and more neutral; can refer to any block of time

  • length

    less specific to time; also used for physical distance

Antonyms
  • instant

    a single moment rather than a measured duration

Grammar Patterns

a span of + period

Usage Note

Often paired with a modifier like 'attention,' 'life,' 'concentration,' or 'time' to specify what kind of duration is being measured.

Common Mistakes

The span of the meeting was two hours long
The meeting lasted two hours.
'span' is more natural for longer or notable durations, not short everyday events.

2. the full distance between one end of an object or open space and the opposite en

2.nounB1
Definition

the full distance between one end of an object or open space and the opposite end

Example

The garden wall measured a span of nearly twelve metres from house to gate.

collocation: span of [enclosure]

The wings of that bird have an impressive span of nearly two metres.

collocation: wingspan / wing span

Common collocations
  • wing span
  • span of the room
  • full span
  • wide span
Synonyms
  • width

    more common for everyday horizontal distances, while 'span' suggests a more dramatic or notable stretch

  • breadth

    more literary or formal; suggests impressive width

Antonyms

Grammar Patterns

the span of + noun

3. the section of a bridge, arch, or other structure that stretches between two sup

3.nounB2
Definition

the section of a bridge, arch, or other structure that stretches between two supporting points

Example

The central span of the bridge was rebuilt after the earthquake damaged its supports.

Engineers designed a single concrete span to connect the two sides of the valley.

collocation: single span

Common collocations
  • central span
  • single span
  • main span
  • bridge span
  • span length
Synonyms
  • arch

    a curved span; more specific about shape

  • section

    more general and less technical

Grammar Patterns

a single-span bridge; span of + number + metres

Usage Note

Frequently used in civil engineering and architecture to describe bridge or roof structures. The 'span' is specifically the unsupported section between piers or columns.

Common Mistakes

The bridge has three spans holding the road up
The bridge has three spans supported by four piers.
'span' refers to the section between supports, not the supports themselves.

4. a historical unit based on the greatest distance possible between the thumb tip

4.nounC1
Definition

a historical unit based on the greatest distance possible between the thumb tip and the tip of the smallest finger when the hand is opened wide, about 23 centimetres

Example

In medieval times, cloth was often measured by the span of a hand.

historical usage

Old texts describe the statue as standing just three spans tall.

Common collocations
  • hand span
  • measured in spans
Synonyms
  • handbreadth

    a related but different measure based on the palm, not the spread fingers

Usage Note

Chiefly found in historical writing, traditional crafts, or descriptions of pre-modern measurement systems. Not used in modern everyday contexts.

span — verb

span — adjective

Word family

Synonym discussion

Sense: noun/1

These four words all describe an amount of time, but they differ in scope and formality. 'Span' emphasises the full extent from beginning to end — it suggests something measured or notable, like an attention span or a life span. 'Duration' is more technical and is the preferred term in academic, scientific, or legal contexts ('the duration of the experiment'). 'Period' is the most neutral and general; it can describe any block of time, from a five-minute break to a geological era ('a period of economic growth'). 'Length' is the simplest — it answers 'how long' and is common in everyday speech ('the length of the movie'). 'Spell' is more informal and suggests a shorter, often undefined stretch ('a spell of rainy weather'). For everyday use, choose 'period' for neutral contexts, 'duration' for formal writing, and 'span' when you want to emphasise the full reach of time involved.

duration ↗period ↗lengthspell

Common collocations

Nouns

  • span of time
  • span of years
  • span of a bridge

Phrases

  • life span
  • attention span
  • spick and span

Prepositions

  • over a span
  • within a span
  • across the span of

Etymology

Proto-GermanicOld EnglishMiddle EnglishEnglish

The word 'span' comes from Old English 'spann', meaning the distance between the thumb and little finger of an outstretched hand. This original measuring sense dates back over a thousand years to Proto-Germanic 'spannō'. By the 13th century, the meaning had broadened from a hand-based unit to any measurable distance between two points. The time-related sense ('the span of a life') emerged around the 16th century through metaphorical extension — treating time as a measurable space between two points. The verb senses developed from the noun: first 'to measure by hand-span' (14th century), then 'to stretch across a physical gap' (17th century), and later 'to cover a period of time' (19th century). The phrase 'spick and span' has a different origin — from Old Norse 'spánnýr' (chip-new), referring to a newly carved wooden object, and later merged with 'span' to mean something as fresh and clean as a new wooden peg.