noun · 1 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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/sɪˈsiːliə/
homophone: Cecilia
homophone: Caecilia
1
noun
Meaning 1
A composite mythical being, combining the head, arms and torso of a woman (more rarely a man) and, from the lower torso down, the tentacles of an octopus or squid as a form of mermaid, sea witch, or sea demon.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
History
Etymology
Apparently coined around 2007 on a discussion thread on Seatails, a mermaid-enthusiast messageboard created by Kurt Cagle, who created a Wikipedia article on the cecaelia (originally “Cecælia”), inspired by Cilia (a cilophyte in “Cilia”, a seven-page short comic story published in issue #16 of the Vampirella comic magazine, released in March of 1972), cilophyte, Coleoidea, and the song “Cecilia” by Simon and Garfunkel, about a fickle and demanding lover (according to Cagle).