Adjacent Words

Infinitesimal definitions

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Webster's 1828 Dictionary

INFINITES'IMAL, a. Indefinitely small.
INFINITES'IMAL, n. An indefinitely small quantity.

WordNet (r) 3.0 (2005)

adj
1: infinitely or immeasurably small; "two minute whiplike threads of protoplasm"; "reduced to a microscopic scale" [syn: infinitesimal, minute] n
1: (mathematics) a variable that has zero as its limit

Merriam Webster's

I. noun Etymology: New Latin infinitesimus infinite in rank, from Latin infinitus Date: 1706 an infinitesimal quantity or variable II. adjective Date: 1710 1. taking on values arbitrarily close to but greater than zero 2. immeasurably or incalculably small <an infinitesimal difference> • infinitesimally adverb

Oxford Reference Dictionary

adj. & n. --adj. infinitely or very small. --n. an infinitesimal amount. Phrases and idioms: infinitesimal calculus the differential and integral calculuses regarded as one subject. Derivatives: infinitesimally adv. Etymology: mod.L infinitesimus f. INFINITE: cf. CENTESIMAL

Webster's 1913 Dictionary

Infinitesimal In`fin*i*tes"i*mal, a. [Cf. F. infinit['e]simal, fr. infinit['e]sime infinitely small, fr. L. infinitus. See Infinite, a.] Infinitely or indefinitely small; less than any assignable quantity or value; very small. Infinitesimal calculus, the different and the integral calculus, when developed according to the method used by Leibnitz, who regarded the increments given to variables as infinitesimal.

Webster's 1913 Dictionary

Infinitesimal In`fin*i*tes"i*mal, n. (Math.) An infinitely small quantity; that which is less than any assignable quantity.

Collin's Cobuild Dictionary

Something that is infinitesimal is extremely small. (FORMAL) ...mineral substances present in infinitesimal amounts in the soil... = tiny ADJ

Soule's Dictionary of English Synonyms

I. a. Infinitely small. II. n. Infinitely small quantity, quantity converging to zero, infinitely diminishing quantity, quantity whose limit is zero, vanishing fluxion.

Moby Thesaurus

atomic, corpuscular, embryonic, evanescent, germinal, granular, impalpable, imperceptible, imponderable, inappreciable, indiscernible, intangible, invisible, microcosmic, microscopic, molecular, subatomic, tenuous, thin, ultramicroscopic, unseeable