infinitesimal
Advanced (C1/C2)
IPA: /ˌɪn.fɪ.nɪˈtɛs.ɪ.məl/
KK: /ɪnˌfɪnɪˈtɛsɪməl/
adjective
Definition
Extremely small or tiny, often so small that it is difficult to measure or calculate.
Example
The scientist measured an infinitesimal amount of the substance in the experiment.
Conversation
Did you hear about the new physics theory?
Yeah, they say it explains infinitesimal particles in a whole new way.
That's fascinating! I never realized how small they could actually be.
Right? It's incredible to think about something so infinitesimal making such a big impact.
Synonyms & Antonyms
Synonyms
minute
tiny
microscopic
Antonyms
enormous
vast
huge
noun
Definition
A very small amount or quantity that is so tiny it is almost zero.
Example
In calculus, we often use infinitesimals to understand changes in functions.
Conversation
Did you ever hear about that concept of infinitesimal quantities in math?
Yeah, I think it's about things that are so small they almost reach zero, right?
Exactly! It's fascinating how something can be so tiny yet still have significance.
Root Explanation
Infinitesimal is formed from "in-" (meaning not) and "finitus" (meaning finite or limited) combined with "-esimal" (from the Latin "esimus", a superlative suffix). The word describes something that is not finite, or extremely small, approaching zero.
Memory Tip
Think of 'not finite' ('in-' and 'finitus') to remember that 'infinitesimal' refers to something that is extremely small, almost negligible.
Visually Confused Words
finitesimal