dhātvagni: what the term means and how it is translated
dhātvagni धात्वग्नि is an Ayurvedic technical term. It is rendered into English in 7 different ways, which is the reason this page exists: the renderings do not agree, and the difference between them changes what the term is taken to mean.
| Transliteration | dhātvagni |
|---|---|
| Devanagari | धात्वग्नि |
| Also written | rasāgni, raktāgni, māṃsāgni, medo-agni, asthyagni, majjāgni, śukrāgni, dhātupāka agni, sapta dhātvagni |
| Category, as gathered | physiology / core concept |
| Grouped here under | Body: tissues, wastes and channels |
| Classical citations | 3 |
| Citations checked | 2026-10-08 |
How it is translated, and whether the translation holds
Each rendering is given with the source that uses it. The assessment is ours.
Metabolic factors located in structural components
WHO International Standard Terminologies on Ayurveda (2022) · ITA-2.6.6 · terminology-standard
WHO description verbatim: 'Transformative factors at structural component level which governs the transformation of one fundamental structural component into another: i.e. primary circulating nutrient metabolic factors, blood metabolic factors, muscle metabolic factors, fat metabolic factors, bone metabolic factors, bone-marrow metabolic factors, semen and reproductive tissue metabolic factors.' WHO lists the seven sub-terms in the same entry and gives them individual IDs at ITA-2.6.12 onward.
Reproduced unaltered and attributed from the WHO International Standard Terminologies on Ayurveda, which is what that licence permits. It is deliberately absent from the downloadable dataset, which is offered under CC BY 4.0 and invites the modification a NoDerivs licence forbids.
Metabolic factors located in primary circulating nutrient fluid
WHO International Standard Terminologies on Ayurveda (2022) · ITA-2.6.12 (rasadhātvagniḥ) · terminology-standard
Example of WHO's per-dhātu entries; ITA-2.6.13 'Metabolic factors located in blood', ITA-2.6.14 '... in muscle', ITA-2.6.15 '... in fat' follow the same pattern.
Reproduced unaltered and attributed from the WHO International Standard Terminologies on Ayurveda, which is what that licence permits. It is deliberately absent from the downloadable dataset, which is offered under CC BY 4.0 and invites the modification a NoDerivs licence forbids.
Dhātvagni (protoplasm)
Sushruta Samhita, tr. Kaviraj Kunja Lal Bhishagratna (1907-1916) · Translator's Introduction, vol. I, pp. xlix-l · public-domain-translation
Bhishagratna's own gloss, repeated: 'The Dhatvagnis (protoplasm) of the muscle are not of the same kind as that of the arteries.' This is a documented historical rendering and a clear category error, recorded here as evidence of how the term was read in 1907, not as a usable definition.
their seven respective fires
Charaka Samhita, tr. Avinash Chandra Kaviratna (1896-1913) · Cikitsāsthāna Lesson XV (Kaviratna's v.14 = Ca.Ci.15.15) · public-domain-translation
Kaviratna does not transliterate the term; he renders it descriptively. No public-domain English word-for-word rendering of 'dhātvagni' exists.
tissue fire / tissue-level metabolic fire / tissue enzymes
General textbook and review usage · e.g. PMID 22131747 · secondary-literature · our paraphrase of the source, not its words
The commonest modern renderings; 'tissue enzymes' is the biomedicalising variant.
no NAMASTE code found
NAMASTE / NAMC · terminology-standard · our paraphrase of the source, not its words
Searched the NAMC term list for 'DAtv' and related stems: zero hits. NAMC codes morbidity, and dhātvagni disorders are not separately coded.
no ICD-11 TM2 category found
ICD-11 MMS v2026-01, TM2 · classification · our paraphrase of the source, not its words
Statement about the TM2 blocks I retrieved, not an exhaustive proof.
The classical passages
Each citation gives its address so a reader can check it in a printed edition, our account of what the passage establishes, and the result of reading it against its source.
Charaka Saṃhitā (Sanskrit)Cikitsāsthāna 15:15 · checked against the source
सप्तभिर्देहधातारो धातवो द्विविधं पुनः। यथास्वमग्निभिः पाकं यान्ति किट्टप्रसादवत् ॥१५॥
The seven-fold tissue-level cooking, stated as 'agnibhiḥ' in the plural rather than as the compound dhātvagni; and the two-fold output (kiṭṭa / prasāda, waste and essence).
Charaka SaṃhitāCikitsāsthāna 15:15 (Kaviratna prints 14) · checked against the source
They who sustain the body, viz., the 'dhatus' (i. e., 'Rasa' or juice, blood, flesh, adeps, marrow, bones, and vital seed), are cooked by their seven respective fires. This process of cooking which they undergo is of two kinds in consequence of the 'Kitta' (refuse) and the 'Prasada' (pure substance) which results from it.
The only public-domain English for the seven dhātvagnis. Kaviratna adds a footnote noting that the text has just said there are five fires and now says seven, and explains the discrepancy, evidence that the bhūtāgni and dhātvagni counts were already felt as awkward.
Aṣṭāṅga Hṛdaya (Sanskrit)Śārīrasthāna 3:70 · checked against the source
doṣāṇām api caivaṃ syād eka-deśa-prakopaṇam | anna-bhautika-dhātv-agni-karmeti paribhāṣitam || 70 ||
Vāgbhaṭa names the three levels together as a technical triad, anna(-agni), bhautika(-agni), dhātv-agni. This is the earliest compound form of dhātvagni I could actually retrieve. Chapter/verse fixed by the file's own internal variant markers around this passage.
Not to be confused with
- bhūtāgni
- bhūtāgni acts on the five elemental fractions of food; dhātvagni acts on the already-assimilated tissue. Vāgbhaṭa names them as separate members of a triad (AH Śā.3.70). Popular writing frequently merges them.
- jāṭharāgni
- jāṭharāgni is prior and governing (Ca.Ci.15.39); dhātvagni is downstream and dependent. Weak dhātvagni with intact jāṭharāgni is a distinct clinical picture from mandāgni.
- dhātu pāka / dhātu pariṇāma
- These name the process; dhātvagni names the agent. Texts that define dhātvagni as 'tissue metabolism' collapse agent into process.
Renderings that do not hold
- protoplasm. Bhishagratna's 1907 gloss. Protoplasm is a substance, dhātvagni is a transforming agent; the gloss also makes his own sentence ('the Dhatvagnis (protoplasm) of the muscle are not of the same kind as that of the arteries') incoherent as physiology.
- tissue enzymes. The modern successor to 'protoplasm'. It imports specificity (named catalysts, measurable activity) that the concept does not have, and there is no study identifying any enzyme with any dhātvagni.
- metabolic rate. Conflates a seven-fold, tissue-specific, directional transformation series with a single scalar quantity.
Open questions
Recorded rather than resolved. Each one is something this entry cannot currently settle.
- Does Aruṇadatta or Cakrapāṇi give the first explicit seven-fold dhātvagni list, and with what wording?
- Why does WHO mix two naming conventions inside ITA-2.6.6?
- Has any study attempted a measurable proxy for any individual dhātvagni?
How to cite this entry
Age Ayurveda Nighantu, dhātvagni
, https://nighantu.ageayurveda.com/lexicon/dhatvagni/, CC BY 4.0.
The whole lexicon is downloadable from the index.
Machine-readable source: Markdown.
Data exported 2026-10-08.
Educational reference only. A term entry explains what a word means and how it has been translated. Nothing here is advice, and nothing here describes how any condition should be treated.