American Dictionary

Define dictionary terms easily in our powerful online English dictionary.

Searching for...

No matching words found

Try a different search term or browse the dictionary

Definition flatline in American English

flatline noun

[uncountable] noun
/ˈflætˌlaɪn/

Taken from the shape of the mark on an EEG machine when someone dies.

1

a situation in which someone or something is dead or no longer operating

Example

Over-demand has caused free Internet access to go flatline.

Synonyms and related words
Definition flatline in American English