placentation
noun
placentation is spelled P-L-A-C-E-N-T-A-T-I-O-N: 12 letters. It appears about once in every 45 million words in written English, the 206,808th most frequent word form (wordfreq, 2021 data). As a noun, placentation means “The local fusion of the embryonic stage of an animal to its parent for physiological exchange to promote the growth and development of the young…” (English Wiktionary, September 2026). The plural of placentation is placentations.
How many letters and syllables are in placentation?
| Letters | 12: P-L-A-C-E-N-T-A-T-I-O-N |
|---|---|
| In writing | about once in every 45 million words; the 206,808th 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 placentation?
Placentation appears about once in every 45 million words in written English, the 206,808th 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).
Forms of placentation
- placentations plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does placentation mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The local fusion of the embryonic stage of an animal to its parent for physiological exchange to promote the growth and development of the young; involves a placenta in non-egglaying mammals.
- 2
The manner in which the seeds are attached to the placenta within the ovary locules.
Parietal placentation occurs in the Brassicaceae family.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does placentation come from?
From placenta + -ation.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).