flatliner
noun
flatliner is a noun meaning “An angler who uses a flatline” (English Wiktionary, September 2026). It is spelled F-L-A-T-L-I-N-E-R, and it appears about once in every 79 million words in written English (wordfreq, 2021 data). The plural of flatliner is flatliners.
What does flatliner mean?
noun
- 1
An angler who uses a flatline.
- 2
rareA patient with no heartbeat.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How do you pronounce flatliner?
- US
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Flame,_not_lame-flatliner.wav, Wikimedia Commons (author and licence on each file's page).
Forms of flatliner
- flatliners plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is flatliner?
Flatliner appears about once in every 79 million words in written English, the 282,993rd most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Where does flatliner come from?
From flatline + -er.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).