Ngày hiệu lực: [04-May-2026]
Đơn vị vận hành: [hoctumoi.vn]
Liên hệ: [hoctumoidev@gmail.com]
Hoctumoi uses a combination of original content, open dictionary data, AI-assisted educational content, generated images, pronunciation audio links, sound effects, and open-source software.
This page explains the main content sources and license notices used in Hoctumoi.
Unless otherwise stated, the Hoctumoi name, logo, product design, user interface, software code, original editorial content, learning flows, product copy, and proprietary learning features are owned by Hoctumoi or its licensors.
You may not copy, redistribute, scrape, resell, reverse engineer, or commercially exploit Hoctumoi’s proprietary materials except as permitted by law or with prior written permission from Hoctumoi.
Some vocabulary data in Hoctumoi is derived from or based on open dictionary data, primarily:
This may include lexical data such as word forms, parts of speech, senses, English definitions, examples, pronunciation metadata, IPA, related forms, and other dictionary-derived fields.
Original Wiktionary entry text is made available under:
Kaikki states that its extracted dictionary data is made available under the same licenses as Wiktionary.
Dictionary-derived content should be attributed to:
Some dictionary data is derived from English Wiktionary and Kaikki.org. Wiktionary content is available under CC BY-SA 4.0 and GFDL. Changes may have been made by Hoctumoi, including formatting, filtering, educational classification, Vietnamese translation, AI-assisted enrichment, and presentation changes.
Hoctumoi may modify or transform dictionary-derived data, including but not limited to:
Where content is adapted from CC BY-SA material, the adapted content may also be subject to the same or compatible share-alike license terms.
Hoctumoi is not endorsed by Wiktionary, Wikimedia Foundation, Kaikki.org, or wiktextract.
Some pronunciation audio in Hoctumoi may be linked directly from Wiktionary, Wikimedia Commons, or related Wikimedia-hosted sources.
Audio files may have their own file-level license, attribution requirements, author information, and usage conditions. The license of each audio file is governed by the corresponding source file page.
Hoctumoi does not claim ownership of third-party pronunciation audio. Where possible, Hoctumoi provides or stores source links so users and maintainers can review the original source and license information.
Pronunciation audio may be sourced from Wiktionary or Wikimedia-hosted files. Please refer to the original file page for author, license, and attribution details.
Hoctumoi may use AI tools to generate, translate, enrich, or review educational content, including:
AI-assisted content may be based on Hoctumoi’s own prompts, dictionary-derived data, editorial rules, or other lawful inputs.
Unless otherwise stated:
Hoctumoi may update, correct, remove, or replace AI-assisted content at any time.
Hoctumoi may use sound effects from free or royalty-free sources, including Pixabay Sound Effects:
Pixabay describes many sound effects as royalty-free and no-attribution-required, but use of any content remains subject to Pixabay’s current terms and any third-party rights that may apply.
Hoctumoi does not claim ownership of third-party sound effects. Where practical, Hoctumoi may keep internal records of the source URL, asset title, author, download date, and license terms for each sound effect.
Example attribution, when attribution is voluntarily provided:
Sound effect from Pixabay. Used under Pixabay’s content license. No endorsement implied.
Hoctumoi may use open-source software libraries, frameworks, SDKs, fonts, icons, and developer tools.
Each open-source component remains subject to its own license terms, such as MIT, Apache-2.0, BSD, ISC, MPL, GPL, LGPL, or other licenses.
A detailed list of software dependencies may be provided in one or more of the following places:
If required by a specific software license, Hoctumoi will preserve copyright notices, license texts, and attribution notices.
Hoctumoi may use third-party services for authentication, hosting, database, analytics, AI content generation, storage, deployment, error tracking, notifications, or similar technical purposes.
These third-party services may have their own terms, privacy policies, and licenses. Use of those services is governed by their respective terms.
Hoctumoi aims to respect third-party licenses and attribution requirements. If you believe that any content, audio, image, sound effect, software component, license notice, or attribution on Hoctumoi is missing, incomplete, or inaccurate, please contact us.
Please include:
Contact: [hoctumoidev@gmail.com]
References to Wiktionary, Wikimedia Foundation, Wikimedia Commons, Kaikki.org, wiktextract, Pixabay, OpenAI, Google, Supabase, or any other third-party service do not imply endorsement, sponsorship, partnership, or approval of Hoctumoi by those parties.
Hoctumoi may update this Licenses & Attributions page from time to time as content sources, third-party services, software dependencies, or license requirements change.