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filariasis

noun

filariasis is spelled F-I-L-A-R-I-A-S-I-S. The wrong spelling people search most is filariosis: about 10 Bing searches a month in the United States (September 2025 to August 2026), about 1 in 48 of all searches for the word. Filariasis is a noun meaning “Any disease common in tropical and subtropical countries resulting from infestation of the lymphatic system…”. The plural of filariasis is filariases.

How do you spell filariasis?

Filariasis is spelled F-I-L-A-R-I-A-S-I-S. 3 wrong spellings are searched or written often enough to measure; together they are about 1 in 17 of the searches for filariasis in either form.

filariasisthe right spelling470 searches a month
filariosiso in place of a10 searches a month
filiariasisan extra i10 searches a month
filiarisisan extra i, a missing a10 searches a month

Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026). Wrong spellings are taken from Wiktionary entries tagged "misspelling" and its obsolete or nonstandard forms, Wikipedia's Lists of common misspellings and the codespell dictionary, then measured. The proofreader's marks show the change that corrects each one.

What does filariasis mean?

noun

  1. 1

    Any disease common in tropical and subtropical countries resulting from infestation of the lymphatic system with nematode worms of the superfamily Filarioidea, transmitted by mosquitoes, characterised by inflammation.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Forms of filariasis

  • filariases plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

How common is filariasis?

Filariasis appears about once in every 16 million words in written English, the 121,279th 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).

Filariasis in Spanish, French, German and Portuguese

In the sense disease transmitted by insects:

LanguageWords
Frenchfilariose
Portuguesefilariose
Spanishfilariosis

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.

Where does filariasis come from?

From filaria + -iasis.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).