follow Dictionary.com

Hone in vs. home in? What's the difference?

infinitesimal

[in-fin-i-tes-uh-muh l] /ˌɪn fɪn ɪˈtɛs ə məl/
adjective
1.
indefinitely or exceedingly small; minute:
infinitesimal vessels in the circulatory system.
2.
immeasurably small; less than an assignable quantity:
to an infinitesimal degree.
3.
of, relating to, or involving infinitesimals.
noun
4.
an infinitesimal quantity.
5.
Mathematics. a variable having zero as a limit.
Origin of infinitesimal
1645-1655
1645-55; < New Latin infīnītēsim(us), equivalent to Latin infīnīt(us) infinite + -ēsimus suffix of ordinal numerals + -al1
Related forms
infinitesimality, infinitesimalness, noun
infinitesimally, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for infinitesimally
Contemporary Examples
Historical Examples
  • He must have been infinitesimally small; but that did not matter.

    Mystic London: Charles Maurice Davies
  • Just think—that sparrow when we last saw it was infinitesimally small.

    The Girl in the Golden Atom Raymond King Cummings
  • Mathematicians, I suppose, could calculate the probabilities, but they must be infinitesimally small.

    Science and Morals and Other Essays Bertram Coghill Alan Windle
  • Their success, of which so much is said in England and America, is "infinitesimally small."

    From Egypt to Japan Henry M. Field
  • This condition will be satisfied if the time of journey down a ray and down all infinitesimally differing paths is the same.

    The Ether of Space Oliver Lodge
  • We are here in presence of geological changes affected neither by shock nor convulsion, nor yet by infinitesimally slow degrees.

    In the Heart of Vosges Matilda Betham-Edwards
  • The inkstand from Italy was large in promise, but poor in fulfillment—the place for ink was infinitesimally small.

    A Few Short Sketches Douglass Sherley
  • One human lifetime is too infinitesimally small to relearn procedures that have taken aeons to develop.

    The Great Gray Plague Raymond F. Jones
  • The trouble is that they are so small, so infinitesimally small, almost.

British Dictionary definitions for infinitesimally

infinitesimal

/ˌɪnfɪnɪˈtɛsɪməl/
adjective
1.
infinitely or immeasurably small
2.
(maths) of, relating to, or involving a small change in the value of a variable that approaches zero as a limit
noun
3.
(maths) an infinitesimal quantity
Derived Forms
infinitesimally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for infinitesimally

infinitesimal

adj.

1710 (1650s as a noun), "infinitely small," from Modern Latin infinitesimus, from Latin infinitus "infinite" (see infinite) + -esimus, as in centesimus "hundredth." Related: Infinitesimally.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
infinitesimally in Science
infinitesimal
  (ĭn'fĭn-ĭ-těs'ə-məl)   
Adjective  Capable of having values approaching zero as a limit.

Noun  A function or variable continuously approaching zero as a limit.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for infinitesimal

Many English speakers likely know this word

Word Value for infinitesimally

23
27
Scrabble Words With Friends