multiplicity

noun

mul·​ti·​plic·​i·​ty ˌməl-tə-ˈpli-sə-tē How to pronounce multiplicity (audio)
plural multiplicities
1
a
: the quality or state of being multiple or various
b
: the number of components in a system (such as a multiplet or a group of energy levels)
2
: a great number
3
: the number of times a root of an equation or zero of a function occurs when there is more than one root or zero
the multiplicity of x = 2 for the equation (x − 2)3 = 0 is 3

Examples of multiplicity in a Sentence

a multiplicity of suggestions for turning the company around Shakespeare's works seem to encompass the full multiplicity of human experience.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In the meantime, the multiplicity of Eurasian problems overtaxes American resources and creates an atmosphere of pervasive, proliferating disarray. Hal Brands, Foreign Affairs, 25 Feb. 2025 No One Knows How to Talk About Weight Loss Anymore Many tissues in the body have receptors for GLP-1, a hormone, which explains its multiplicity of health effects. Alice Park, TIME, 21 Jan. 2025 Nevertheless, the district’s multiplicity accommodates different realities at once, even those whose ideologies conflict with the diverse beliefs of many native Washingtonians. Essence, 17 Jan. 2025 Resilience requires a multiplicity of suppliers, logistics networks, and production means. Saadia Zahidi, Foreign Affairs, 17 Jan. 2025 See All Example Sentences for multiplicity

Word History

Etymology

Middle English, from Middle French multiplicité, from Late Latin multiplicitat-, multiplicitas, from Latin multiplic-, multiplex

First Known Use

15th century, in the meaning defined at sense 1a

Time Traveler
The first known use of multiplicity was in the 15th century

Browse Nearby Words

Cite this Entry

“Multiplicity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/multiplicity. Accessed 13 Mar. 2025.

Kids Definition

multiplicity

noun
mul·​ti·​plic·​i·​ty ˌməl-tə-ˈplis-ət-ē How to pronounce multiplicity (audio)
plural multiplicities
1
: the quality or state of being multiple or various
2
: a great number

Medical Definition

multiplicity

noun
mul·​ti·​plic·​i·​ty ˌməl-tə-ˈplis-ət-ē How to pronounce multiplicity (audio)
plural multiplicities
1
: the quality or state of being multiple or various
2
: the ratio of the number of infectious particles (as of a bacteriophage) to the number of cells at risk
monolayer cultures … were infected at an effective multiplicity of approximately 100J. J. Holland

Legal Definition

multiplicity

noun
mul·​ti·​plic·​i·​ty ˌməl-tə-ˈpli-sə-tē How to pronounce multiplicity (audio)
plural multiplicities
1
a
: the quality or state of being multiple or various
b
: the charging of a single criminal act or offense as multiple separate charges or counts of an indictment or information
multiplicity does not require dismissal of the indictmentW. R. LaFave and J. H. Israel
compare duplicity sense 2, misjoinder

Note: Multiplicity raises the risk of violating the double jeopardy protection against receiving multiple sentences for a single offense. Multiplicity is a defect that can be corrected without dismissal of the case.

2
: a great number
joinder is allowed to avoid a multiplicity of actions

More from Merriam-Webster on multiplicity

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