With approximately 3,000 newly added entries and 4,000 revised entries, the total number of entries is approximately 22,000.
This latest earth science encyclopedia reflects the latest research findings from the past 30 years, covering topics such as environmental issues and the prediction of earthquakes and volcanic eruptions.
Leading researchers explain terms related to environmental issues that affect our daily lives, natural disasters (typhoons, floods, earthquakes, volcanic eruptions, etc.), underground resources (oil fields, metals, etc.), and applied geology (surveys, research, and applications of foundation ground, groundwater, disasters, etc.).

■ About the Dictionary Contents ■
- Focusing on the field of geology, the dictionary includes the latest terms in the broader field of earth science and related space sciences, as well as terms used in important past papers and textbooks, where possible.
- Entries are arranged alphabetically, with a subtopic structure as the general rule. Geminated consonants and palatalized consonants are also counted in phonetic order, with the order being unvoiced → voiced → semi-voiced, with the "sound-hiding" (ー) being unrelated to phonetic order.

- As a general rule, each entry is written in the order of heading, explanatory text, and author's name, but since a Japanese index is not being created, "direct entries" without explanatory text or author's name are also actively used. Where necessary, entries that are considered useful for reference (reference items) and references are added after the explanatory text.

- For Japanese, common kanji, hiragana writing, and modern kana spelling are the basis, but non-common kanji, katakana, and old kana spelling are also used as necessary.

- For Chinese and Korean, local pronunciations are written in katakana, and for other languages, kanji are used (simplified Chinese characters are written side by side for Chinese as needed).

For other foreign languages, English is generally used (katakana spelling is also accepted), but scientific names (Latin) are used for plant and animal names and paleontological names, and foreign languages other than English are also used when necessary for personal names and etymological explanations.

■ Enhance the features of dictionary content with app features! ■
- Take advantage of the app version's robust support for features like link jumps to related entries.
- Includes a feature that links to the corresponding entry by including the subject-specific information attached to each entry as an index.

■ Comprehensive Search Functions! ■
- Automatically searches as you enter keywords. Search results are instantly updated with "Incremental Search."
- Search keywords can also be entered using voice input.
- Detailed search criteria can be specified, such as "prefix match" or "suffix match." Searches are instantly re-opened when criteria change.
- Nearly all dictionaries offer "Full-Text Search," which searches the text of all entries.
- Search within the current dictionary entry using "In-Text Search."
- Automatically records the history of entered keywords and displayed entries. Re-entering and re-displaying entries is easy.

■ App-only sharing with other apps! ■
- Supports the basic Android operation "Share"! You can have the dictionary browser search text selected in another app.
- When using "Share," you can freely specify the dictionary to search from any dictionary app you have.
- The opposite of "Share," you can use dictionary entry text to search the web. Of course, you can also search dictionary apps.

■ Customize text for easier reading! ■
- You can precisely adjust the font size of dictionary entry text.
- A dark theme mode (black background + white text) is also available for easier on the eyes.
- Of course, you can also resize entries using touch controls.

■ Bookmark important information! ■
- You can bookmark dictionary entries at any time.
- You can choose from 10 color patterns and set memo text for bookmarks.
- The bookmark list screen has a filter function that displays only bookmarks of a specific color.
- The display order of the bookmark list screen can be sorted by entry date, entry order, etc.

■ Powerful integration between dictionary series! ■
- You can freely group dictionary series and search them all at once.
- The group dictionary search results list allows you to jump to the beginning of each member's dictionary.
- Duplicates are OK! You can register one dictionary as a member of multiple groups at the same time.
- Group dictionary bookmarks can, of course, be displayed together.
- You can instantly search another dictionary using the text of the displayed dictionary entry.

■ Convenient add-ons and extensions are also included! ■
- Dictionary entry text can be read aloud using synthesized speech.

■ No internet connection required once setup is complete! ■
- All data required by the dictionary is stored within the app.
- Once installation and setup are complete, it can be used completely offline.

■ Important Notes ■
- To use this app, you will need the companion app "Dictionary - LogoVista App | English-Japanese Dictionary with Audio."
Please install the "Dictionary - LogoVista App | English-Japanese Dictionary & Audio" from Google Play.

- To use the text-to-speech feature, you must install the free "Google Text-to-Speech" app separately.

- If you have any questions about our products, please contact us at the address below:

android.dev@logovista.co.jp

■ About Saving Data to External Storage (External SD Card) ■
- You can save some data from the Dictionary app to external storage (external SD card).

* Please note that there are terms and conditions for use. For details, please see Q8 on our Q&A page below.

https://www.logovista.co.jp/LVERP/information/support/user_qa/android/top.html#Q8

■ System Requirements ■
- Android OS 7.0 to 16.0
* The system requirements are for the latest publicly available version. Requirements may differ if you are using an earlier version.

■ About Chromebook Compatible Models
To use the LogoVista Digital Dictionary Series for Android app on a Chromebook, you need a Chromebook that supports Google Play (Android apps).

■ Operation Not Guaranteed ■
・Android OS 1.0 to 6.0.1
・Android devices with non-ARM CPUs
・"Go Edition" versions of each Android OS

■ Developer/Publisher ■
LogoVista, Inc. https://www.logovista.co.jp/

■ Content Publisher ■
Heibonsha Co., Ltd.