astrobiology
"astrobiology" is a 12-letter English headword indexed on PlainSpell.
The verdict
“astrobiology” is uncommon English (frequency #90,158 among 3,931 “A” headwords), classed as a noun. The kind of spelling people second-guess.
- #90,158
- frequency rank, English
- 3,931
- “A” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The study of life anywhere in the universe, including Earth.
Corpus desk
Index EN-astrobiology · astrobiology · English
astrobiology · rank #90,158 · 0 variants · 0 confusables
- FREQ-RARE #90,158
- LEN-MEGA 12 letters
- VOW-6 6 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,931
- PHOTO-FINISH Asya
Nearest frequency peer: Asya (+1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Long-tail ranks near “astrobiology”
Sparse band: bars invert rank so rarer forms read shorter
- asiago
asiago
9,847 corpus weight
- Astarte
Astarte
9,845 corpus weight
- astrobiology
astrobiology
9,843 corpus weight
- Asya
Asya
9,842 corpus weight
- atresia
atresia
9,840 corpus weight
- avaricious
avaricious
9,838 corpus weight
What this shows Long-tail view: where “astrobiology” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | astrobiology |
| Language | English |
| Part of speech | Noun |
| Letters | 12 |
| Frequency rank | #90,158 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “astrobiology” in English
Rare enough to double-check
astrobiology is uncommon English at frequency #90,158 among 3,931 “A” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The study of life anywhere in the universe, including Earth.".
No misspelling variants are generated for astrobiology in our index, since its letter sequence doesn't invite the usual edit-distance slips. This headword has no recorded confusable partner, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: From astro- + biology. The correct English form is astrobiology, spelled A-S-T-R-O-B-I-O-L-O-G-Y.
Definition
- 1The study of life anywhere in the universe, including Earth.
Etymology
From astro- + biology.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "astrobiology", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 12 letters (nearest by frequency rank).