Best Geology Dictionary Terms Definitions Apps

202+ iOS apps curated and reviewed

4.4 avg rating
17 free apps
Updated May 2026

Every iPhone needs a few good geology dictionary terms definitions apps. We benchmark 202+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Top Picks for Geology Dictionary Terms Definitions

Geology Dictionary Terms Definitions#1
1.3(7 ratings)
Free
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Instantly decode geology terms with this free offline dictionary. Access a vast encyclopedia of geological vocabulary, bookmark important terms, and learn correct pronunciation with audio. Perfect for students and professionals encountering unfamiliar geological language.

Dictionary.com: English Words#2

Dictionary.com: English Words by Curiosity Media, Inc.

Dictionary, Thesaurus, Vocab
Strong Contender
🔍 Reference
4.8😐(328K ratings)
FreeAdsIn-App Purchases
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Access over 2 million trusted definitions and synonyms for English words. Enhance your vocabulary with daily new words, example sentences, and audio pronunciations. This app provides grammar tips and editorial content to deepen your understanding of the English language.

What We Love

  • 🚀 Robust dictionary and thesaurus
  • 🤓 Helpful resources like blogs and articles
  • 💡 Useful word games and puzzles
  • 👍 Easy to use and navigate

Room to Improve

  • 🐛 Inconsistent search results and missing definitions
  • 💸 Aggressive ads even after paid upgrades
  • 🤯 Frequent crashes and performance issues
Dictionary.#3

Dictionary. by Farlex, Inc.

by TheFreeDictionary.com
Worth Considering
🔍 Reference
4.8😊(14K ratings)
FreeAdsIn-App Purchases
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Access a comprehensive dictionary, thesaurus, and translation tool with millions of definitions and synonyms. Explore specialty dictionaries, learn new words daily, and play word games. This app offers offline access and integrates seamlessly with other applications.

What We Love

  • 🚀 Comprehensive and detailed definitions
  • 👍 Helpful thesaurus and translation features
  • 🎮 Fun word games and activities
  • 📚 Vast amount of information beyond just definitions

Room to Improve

  • 🔍 Cluttered interface with too many ads
  • 🐛 Occasional crashes and bugs
  • 🔍 Difficulty finding specific settings or features

More Geology Dictionary Terms Definitions apps to explore

4
Merriam-Webster Dictionary
Merriam-Webster Dictionary
Merriam-Webster Dictionary
by Merriam-Webster, Inc.
Free

Access America's most respected dictionary, updated with new words and meanings. This app offers offline access, voice search, daily vocabulary challenges, and a thesaurus. It's designed for English language reference, education, and vocabulary enhancement.

Offline dictionary accessVoice search for wordsDaily Word of the Day
🔍 Reference
(320K)
free with in-app purchases
5
Geology Dictionary - Offline
Geology Dictionary - Offline
Geology Dictionary - Offline
Geological Terms with meaning
Free

Access a vast offline dictionary of geological terms with definitions, synonyms, and audio pronunciations. Learn about Earth sciences, save favorite words, and test your knowledge with quizzes. Share terms easily with friends.

Offline access to 50,000+ geological termsDefinitions, synonyms, and example sentencesAudio pronunciations for over 5,000 terms
📚 Education
(5)
free with in-app purchases
6
Merriam-Webster Dictionary+
Merriam-Webster Dictionary+
Merriam-Webster Dictionary+
Premium Ad-free Dictionary
$9.99

Access America's leading dictionary with over 15,000 extra entries for people and places. Enjoy offline access, voice search, and daily vocabulary builders. This app offers expert word guidance with a thesaurus and example sentences.

Ad-free experience15,000+ premium entriesOffline dictionary access
🔍 Reference
(22K)
freemium
7
Oxford Dictionary & Thesaurus
Oxford Dictionary & Thesaurus
Oxford Dictionary & Thesaurus
Thesaurus & Offline Vocabulary
Free

Access a vast collection of dictionaries and thesauruses with definitions, pronunciations, and etymology. Features include offline access, advanced search options, and personalized word lists. Ideal for students, professionals, and word enthusiasts.

15 Oxford DictionariesThesaurus integrationAudio pronunciations
🔍 Reference
(28K)
free with in-app purchases
8
Etymonline English Dictionary
Etymonline English Dictionary
Etymonline English Dictionary
Dictionary to Build Vocabulary
Free

Explore the origins and history of English words with this comprehensive dictionary app. It offers instant search, related word suggestions, and an offline mode for premium users. Enhance your vocabulary and understanding of word roots.

Word origin explorationInstant search with suggestionsRelated words by root
📚 Education
(11K)
free with in-app purchases
9
Advanced English Dictionary.
Advanced English Dictionary.
Advanced English Dictionary.
English Dictionary & Thesaurus
$2.99

This comprehensive English dictionary and thesaurus offers offline access to millions of words, definitions, pronunciations, and etymologies. Explore word connections, sample sentences, and discover new vocabulary with advanced search and unique features.

Extensive word database (4.9 million words)High-quality audio pronunciations (US, UK, AU)Advanced search technology
🔍 Reference
(238)
paid
10
WordWeb Dictionary
WordWeb Dictionary
WordWeb Dictionary
Offline ad-free dictionary
Free

This app provides a comprehensive offline English dictionary and thesaurus with fast searching, spelling suggestions, definitions, and usage examples. It offers extensive word data and advanced search filters without requiring an internet connection.

Offline dictionary and thesaurusFast searchingSpelling suggestions
🔍 Reference
(85)
free
11
Geology — dictionary
Geology — dictionary
Geology — dictionary
The science of geology
Free

This app serves as a comprehensive personal guide for learning geology, offering a dictionary of terms with flashcards and visual explanations. It also includes video lectures and a detailed textbook covering major geological topics.

Dictionary with key terms and definitionsFlashcards for memorizationVisual explanations of concepts
📚 Education
(1)
free with in-app purchases
12
Advanced Dictionary&Thesaurus
Advanced Dictionary&Thesaurus
Advanced Dictionary&Thesaurus
English dictionary with Audio
Free

This comprehensive English dictionary and thesaurus offers precise definitions, synonyms, antonyms, and related words. It features intelligent search tools, offline audio, and customizable themes to enhance your language learning experience.

140,000+ definitionsSynonyms, antonyms, and related wordsOffline audio pronunciation
🔍 Reference
(4.3K)
free with in-app purchases
13
Medical Dictionary - English
Medical Dictionary - English
Medical Dictionary - English
150,000 medical terms
Free

Access over 150,000 medical definitions, terminology, and abbreviations across all branches of medicine. This free resource offers clear explanations for medical professionals, students, and anyone interested in healthcare terms.

150,000+ medical definitionsExtensive terminology and abbreviationsCovers all branches of medicine
🏥 Medical
(163)
free with in-app purchases
14
UrbanWatch - Slang Dictionary
UrbanWatch - Slang Dictionary
UrbanWatch - Slang Dictionary
Slang dictionary on your wrist
Free

Access a comprehensive slang dictionary with definitions, a daily word, and random entries. Save your favorite terms and sync them across your devices. Share interesting definitions with friends.

Slang definitionsWord of the DayRandom definitions
🔍 Reference
(9)
free with in-app purchases
15
WordReference Dictionary
WordReference Dictionary
WordReference Dictionary
by WordReference.com, LLC
Free

Access a comprehensive suite of dictionaries and translation tools for multiple languages. Explore conjugations, synonyms, and a vast forum with millions of answered questions. This app provides quick access to extensive language resources.

Extensive multilingual dictionariesVerb conjugatorsSynonym finder
🔍 Reference
(5)
ad-supported
16
Medical Dictionary by Farlex
Medical Dictionary by Farlex
Medical Dictionary by Farlex
Healthcare Terminology
Free

Access over 180,000 medical terms with clear definitions, audio pronunciations, and images from authoritative sources. This free app is ideal for healthcare professionals, students, and anyone curious about medical terminology, offering offline access to a vast glossary.

180,000+ medical terms and definitionsOffline access to 40,000+ entriesThousands of medical abbreviations
🏥 Medical
(6.5K)
free with in-app purchases
17
American Heritage Dictionary +
American Heritage Dictionary +
American Heritage Dictionary +
English Dictionary & Thesaurus
$14.99

Access a comprehensive English dictionary with updated definitions, etymologies, and usage notes. Features include advanced search tools like voice and camera input, plus customizable themes and learning aids to enhance vocabulary.

Comprehensive English dictionaryUpdated definitions and etymologiesAdvanced search tools (voice, camera, keyword)
🔍 Reference
(120)
free with in-app purchases
18
Persian Dictionary - Leitnary
Persian Dictionary - Leitnary
Persian Dictionary - Leitnary
English-Farsi Dictionary
Free

This app is a comprehensive English-Persian dictionary and vocabulary learning tool. It offers offline access to over 200,000 definitions, pronunciations, and example sentences. It also incorporates the Leitner system for effective word memorization.

English-Persian and Persian-English dictionaryOffline access to definitionsAudio pronunciations (online and offline)
📚 Education
(2.9K)
free
19
Kurdish Dictionary - Dict Box
Kurdish Dictionary - Dict Box
Kurdish Dictionary - Dict Box
English Kurdish Translation
Free

This app serves as a comprehensive English to Kurdish and Kurdish to English dictionary and translator. It offers offline functionality, pronunciation, definitions, and the ability to translate words directly within other applications. Users can also find related words, phrases, and even use image search for a richer learning experience.

Offline translation and pronunciationExtensive word and expression databaseIn-app word translation
🔍 Reference
(14K)
free with in-app purchases
20
Geology Dictionary Pro
Geology Dictionary Pro
Geology Dictionary Pro
Geology Dictionary Pro
Free

Access a vast offline database of geology terms and definitions. This app offers a search function, daily words, and quizzes to enhance your understanding of geological vocabulary. Perfect for students and enthusiasts needing quick access to geological information.

Offline access to tens of thousands of termsSearchable geology vocabularyBookmark favorite terms
📚 Education
(6)
free