infinitesimal

C2+ Topic:Numbers & Quantity

US /ˌɪnfɪnɪˈtɛsɪməl/ UK /ˌɪnfɪnɪˈtɛsɪməl/ See IPA manual

adj noun

Meanings

1

adj
extremely small; smaller than any measurable quantity

The difference between the two readings was infinitesimal.

Thesaurus

Synonyms

1 adj · extremely small; smaller... minuscule tiny microscopic minute negligible imperceptible

Opposites

enormous huge vast infinite

Word family

Forms infinitesimally

Derived forms infinitesimally

Related forms infinite infinity finite

Etymology

From New Latin infinitesimus ('infinitieth'), from Latin infinitus ('unbounded') with the ordinal suffix -esimus, modeled on centesimus; literally 'the infinitieth part'.

infinitus Latin finis Latin

View etymology graph ->

Topics

Numbers & Quantity Word Formation & Derivatives

# infinitesimal

**Type:** Word
**Level:** C2+
**Part of speech:** adj, noun
**IPA (US):** ˌɪnfɪnɪˈtɛsɪməl
**IPA (UK):** ˌɪnfɪnɪˈtɛsɪməl

## Meanings
1. extremely small; smaller than any measurable quantity

## Examples
- The difference between the two readings was infinitesimal.

## Synonyms
- minuscule
- tiny
- microscopic
- minute
- negligible
- imperceptible

## Antonyms
- enormous
- huge
- vast
- infinite

## Derived Forms
- infinitesimally

## Related Forms
- infinite
- infinity
- finite

## Roots and Affixes
- Root: infinitus
- Root: finis

## Etymology
From New Latin infinitesimus ('infinitieth'), from Latin infinitus ('unbounded') with the ordinal suffix -esimus, modeled on centesimus; literally 'the infinitieth part'.

## AI Etymology
Infinitesimal comes from New Latin infinitesimus ('infinitieth'), from Latin infinitus ('unbounded') with the ordinal suffix -esimus, modeled on centesimus; literally 'the infinitieth part'. The etymological trail includes Latin infinitus and Latin finis. As an adjective, infinitesimal means extremely small; smaller than any measurable quantity. The same family is visible in derived forms such as infinitesimally and related forms such as infinite, infinity, and finite.

## Topics
- Numbers & Quantity
- Word Formation & Derivatives

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infinitesimal

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