echinoid
e·chi·noid/ˈɛk.əˌnɔɪd/noun, adjective
echinoid is a noun meaning “Any sea urchin or sea dollar of the class Echinoidea” (English Wiktionary, September 2026). It is spelled E-C-H-I-N-O-I-D and has 3 syllables (e·chi·noid), and it appears about once in every 74 million words in written English (wordfreq, 2021 data). The plural of echinoid is echinoids.
What does echinoid mean?
noun
- 1
Any sea urchin or sea dollar of the class Echinoidea.
adjective
- 1
Resembling a sea urchin.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How do you pronounce echinoid?
- /ˈɛk.əˌnɔɪd/
- /əˈkaɪˌnɔɪd/
- /iˈkaɪˌnɔɪd/
Echinoid has 3 syllables, split e·chi·noid in writing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of echinoid
- echinoids plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is echinoid?
Echinoid appears about once in every 74 million words in written English, the 272,462nd 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 echinoid come from?
From echino- + -oid.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).