filum
/ˈfaɪləm/noun
filum is a noun meaning “a filamentous anatomical structure” (English Wiktionary, September 2026). It is spelled F-I-L-U-M, and it appears about once in every 60 million words in written English (wordfreq, 2021 data). The plural of filum is fila.
What does filum mean?
noun
- 1
a filamentous anatomical structure
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How do you pronounce filum?
- /ˈfaɪləm/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-filum.wav, Wikimedia Commons (author and licence on each file's page).
Forms of filum
- fila plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is filum?
Filum appears about once in every 60 million words in written English, the 243,301st 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).
Words people confuse with filum
Sounds like: phylum (Wiktionary's homophone list; some hold only in some accents).
Sources: English Wiktionary (homophones, alternative spellings).
Where does filum come from?
From Latin fīlum (“thread”). Doublet of file.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).