span

¹ American  

[span] / spæn /

noun

1. the distance between the tip of the thumb and the tip of the little finger when the hand is fully extended.

2. a unit of length corresponding to this distance, commonly taken as 9 inches (23 centimeters).

3. a distance, amount, piece, etc., of this length or of some small extent.

   a span of lace.

4. Civil Engineering, Architecture.

   1. the distance between two supports of a structure.

   2. the structure so supported.

   3. the distance or space between two supports of a bridge.

5. the full extent, stretch, or reach of anything.

   a long span of memory.

6. Aeronautics. the distance between the wing tips of an airplane.

7. a limited space of time, as the term or period of living.

   Our span on earth is short.

8. Mathematics. the smallest subspace of a vector space that contains a given element or set of elements.

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verb (used with object)

spanned, spanning

1. to measure by the hand with the thumb and little finger extended.

2. to encircle with the hand or hands, as the waist.

3. to extend over or across (a section of land, a river, etc.).

4. to provide with something that extends over.

   to span a river with a bridge.

5. to extend or reach over (space or time).

   a memory that spans 90 years.

6. Mathematics. to function (in a subspace of a vector space) as a span.

7. Archery. to bend (the bow) in preparation for shooting.

span ² American  

[span] / spæn /

noun

1. a pair of horses or other animals harnessed and driven together.

   Synonyms:

   team

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span ³ American  

[span] / spæn /

verb

Archaic.

1. a simple past tense of spin.

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Span. ⁴ American  

abbreviation

1. Spaniard.

2. Spanish.

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span ¹ British  

/ spæn /

noun

1. the interval, space, or distance between two points, such as the ends of a bridge or arch

2. the complete duration or extent

   the span of his life

3. psychol the amount of material that can be processed in a single mental act

   apprehension span

   span of attention

4. short for wingspan

5. a unit of length based on the width of an expanded hand, usually taken as nine inches

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verb

1. to stretch or extend across, over, or around

2. to provide with something that extends across or around

   to span a river with a bridge

3. to measure or cover, esp with the extended hand

Span. ² British  

abbreviation

1. Spanish

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span ³ British  

/ spæn /

noun

1. a team of horses or oxen, esp two matched animals

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span ⁴ British  

/ spæn /

verb

1. archaic a past tense of spin

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span Idioms  

1. see spick and span.

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Related Words

See pair.

Etymology

Origin of span¹

First recorded before 900; Middle English noun spanne, sponne, spayn, Old English span(n), spon(n); cognate with German Spanne, Dutch span, Old Norse spǫnn; the verb is derivative of the noun

Origin of span²

An Americanism dating to 1760–70; from Dutch: “team (of oxen, horses)”

Explanation

Any distance between two things is called a span. These end points can be physical, like the span of a rope between two trees, or they can be more abstract, such as the span of time between five and six o'clock. Span comes from the Old English spann, the width of the stretched-out hand, measured from thumb to little finger. It came to refer to various other measurements, such as the distance across an arch. The first reference to a length of time came in the late 16th century, and the phrase "attention span" first appeared in 1922 (as "span of attention").

Example Sentences

They span a range from selenium-74, the lightest, to mercury-196, the heaviest, and their origin has remained unclear for decades.

From Science Daily • Apr. 14, 2026

These carved reliefs span dimensions of the Black L.A. experience — there’s so much joy, there’s this overdue reverence too; another, fuller frame.

From Los Angeles Times • Apr. 14, 2026

Drawn from major museums and private collections, they span much of the artist’s working life.

From The Wall Street Journal • Apr. 13, 2026

Eleri Lynn, chief curator at Historic Royal Palaces, said the display of images spanning 300 years of family photoshoots, commissioned portraiture and official engagements would embark on a tour planned to span the UK.

From BBC • Apr. 12, 2026

She was scarcely past the middle of her span of years, and her life would not easily pass from her body, so that she lay dying on her bed for many months.

From "The Good Earth" by Pearl S. Buck

Related Words

• interval
• length
• period
• space
• spell
• stretch
• term