The Britannica Dictionary
mobile search
Home
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
×
Britannica Homepage
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
The Britannica Dictionary
infinitesimal
1 ENTRIES FOUND:
infinitesimal
(adjective)
infinitesimal
/ɪnˌfɪnə
ˈ
tɛsəməl/
adjective
infinitesimal
/ɪnˌfɪnə
ˈ
tɛsəməl/
adjective
Britannica Dictionary definition of INFINITESIMAL
[
more infinitesimal; most infinitesimal
]
:
extremely small
an
infinitesimal
moment in time
an
infinitesimal
difference
[+] more examples
[-] hide examples
[+] Example sentences
[-] Hide examples
— infinitesimally
/ɪnˌfɪnə
ˈ
tɛsəməli/
adverb
an
infinitesimally
small difference
[+] more examples
[-] hide examples
[+] Example sentences
[-] Hide examples
ASK THE EDITOR
What are the plural forms of
check-in
,
passerby
, and
spoonful
?
See the answer »
QUIZZES
Vocabulary Quiz
Test your word power
Take the Quiz »
Name That Thing
Take our visual quiz
Test Your Knowledge »
WORD OF THE DAY
expensive
:
costing a lot of money
Learn More »