blackbody
noun
blackbody is spelled B-L-A-C-K-B-O-D-Y: 9 letters. It appears about once in every 16 million words in written English, the 119,826th most frequent word form (wordfreq, 2021 data). As a noun, blackbody means “A theoretical body, approximated by a hole in a hollow black sphere, that absorbs all incident electromagnetic radiation and reflects none (it has a…” (English Wiktionary, September 2026). The plural of blackbody is blackbodies.
How many letters and syllables are in blackbody?
| Letters | 9: B-L-A-C-K-B-O-D-Y |
|---|---|
| In writing | about once in every 16 million words; the 119,826th 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 blackbody?
Blackbody appears about once in every 16 million words in written English, the 119,826th 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 blackbody?
- US
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-us-blackbody.ogg, Wikimedia Commons (author and licence on each file's page).
Forms of blackbody
- blackbodies plural
- black body
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does blackbody mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A theoretical body, approximated by a hole in a hollow black sphere, that absorbs all incident electromagnetic radiation and reflects none (it has a characteristic emission spectrum).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Blackbody in Spanish, French, German and Portuguese
In the sense an idealized object that absorbs all electromagnetic radiation that falls on it:
| Language | Words |
|---|---|
| French | corps noir |
| German | schwarzer Körper |
| Spanish | cuerpo negro |
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 blackbody come from?
From German, coined by German physicist and mathematician Gustav Kirchhoff in 1860. By surface analysis, black + body.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).