hydrogeology

noun

"hydrogeology" is a 12-letter English headword indexed on PlainSpell.

The verdict

“hydrogeology” is uncommon English (frequency #97,126 among 2,646 “H” headwords), classed as a noun. The kind of spelling people second-guess.

#97,126
frequency rank, English
2,646
“H” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The geology of groundwater, especially concerning the physical, biological and chemical properties of its occurrence and movement.

Corpus desk

Index EN-hydrogeology · hydrogeology · English

hydrogeology · rank #97,126 · 0 variants · 0 confusables

  • FREQ-RARE #97,126
  • LEN-MEGA 12 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 2,646
  • PHOTO-FINISH hydrolase

Nearest frequency peer: hydrolase (+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 “hydrogeology”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “hydrogeology” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for hydrogeology
PropertyValue
Headwordhydrogeology
LanguageEnglish
Part of speechNoun
Letters12
Frequency rank#97,126
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “hydrogeology” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).hydrogeologyfalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “hydrolase” (#97,127), “Hurstville” (#97,124), “hydromorphone” (#97,128). Among 2,646 “H” headwords, “hydrogeology” is #97,126. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

hydrogeology is uncommon English at frequency #97,126 among 2,646 “H” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The geology of groundwater, especially concerning the physical, biological and chemical properties of its occurrence and movement.".

No misspelling variants are generated for hydrogeology in our index, a sign its spelling follows regular English conventions. This entry stands alone in our confusable dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From hydro- + geology. The correct English form is hydrogeology, spelled H-Y-D-R-O-G-E-O-L-O-G-Y.

Definition

  1. 1
    The geology of groundwater, especially concerning the physical, biological and chemical properties of its occurrence and movement.

Recorded use

Wiktionary example

These source excerpts show how hydrogeology appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. This issue led to an interim battle among the parties to exclude various expert witnesses regarding the aquifer's hydrogeology and a five-day evidentiary hearing before Special Master Eugene Siler in May 2019.

Etymology

From hydro- + geology.

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.

Frequently Asked Questions

How do you spell "hydrogeology"?
"hydrogeology" is spelled H-Y-D-R-O-G-E-O-L-O-G-Y.
What does "hydrogeology" mean?
As a noun, "hydrogeology" means: The geology of groundwater, especially concerning the physical, biological and chemical properties of its occurrence and movement.
What is the origin of the word "hydrogeology"?
From hydro- + geology. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "hydrogeology", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 12 letters (nearest by frequency rank).

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list