echinoderm
e·chi·no·derm/ɪˈkaɪnəˌdɝm/noun
echinoderm is a noun meaning “An animal of the phylum Echinodermata, comprising radially symmetric, spiny-skinned marine animals including seastars, sea urchins, sea cucumbers…” (English Wiktionary, September 2026). It is spelled E-C-H-I-N-O-D-E-R-M and has 4 syllables (e·chi·no·derm), and it appears about once in every 24 million words in written English (wordfreq, 2021 data). The plural of echinoderm is echinoderms.
What does echinoderm mean?
noun
- 1
An animal of the phylum Echinodermata, comprising radially symmetric, spiny-skinned marine animals including seastars, sea urchins, sea cucumbers, crinoids, and sand dollars.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How do you pronounce echinoderm?
- UK /ɪˈkaɪnə(ʊ)ˌdɜːm/
- UK /ɪˈkɪ-/
- US /ɪˈkaɪnəˌdɝm/
Echinoderm has 4 syllables, split e·chi·no·derm in writing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-echinoderm.wav, Wikimedia Commons (author and licence on each file's page).
Forms of echinoderm
- echinoderms plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is echinoderm?
Echinoderm appears about once in every 24 million words in written English, the 148,541st 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).
Echinoderm in Spanish, French, German and Portuguese
In the sense member of the Echinodermata:
| Language | Words |
|---|---|
| French | échinoderme |
| German | Stachelhäuter |
| Portuguese | equinodermo |
| Spanish | equinodermo |
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 echinoderm come from?
From French échinoderme, corresponding to echino- + -derm, after plural of 18th-century Latin echinoderma.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).