synapsid
/sɪˈnapsɪd/adjective, noun
synapsid is spelled S-Y-N-A-P-S-I-D: 8 letters. It appears about once in every 78 million words in written English, the 279,513th most frequent word form (wordfreq, 2021 data). As an adjective, synapsid means “Pertaining to the class Synapsida of animals which have an opening low in the skull roof behind each eye, leaving a bony arch beneath each” (English Wiktionary, September 2026).
How many letters and syllables are in synapsid?
| Letters | 8: S-Y-N-A-P-S-I-D |
|---|---|
| In writing | about once in every 78 million words; the 279,513th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is synapsid?
Synapsid appears about once in every 78 million words in written English, the 279,513th 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).
How do you pronounce synapsid?
- UK /sɪˈnapsɪd/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of synapsid
- synapsids plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does synapsid mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Pertaining to the class Synapsida of animals which have an opening low in the skull roof behind each eye, leaving a bony arch beneath each.
noun
- 1
Any animal (all mammals) of the class Synapsida.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Synapsid in Spanish, French, German and Portuguese
In the sense member of the Synapsida:
| Language | Words |
|---|---|
| French | synapside |
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 synapsid come from?
From translingual Synapsida, from syn- + Ancient Greek ἁψίς (hapsís, “arch”).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).