Amavasi, Amāvasī, Amāvāsī: 12 definitions
Introduction:
Amavasi means something in Hinduism, Sanskrit, Jainism, Prakrit, Buddhism, Pali. If you want to know the exact meaning, history, etymology or English translation of this term then check out the descriptions on this page. Add your comment or reference to a book if you want to contribute to this summary article.
In Hinduism
Purana and Itihasa (epic history)
Source: archive.org: Puranic EncyclopediaAmāvāsī (अमावासी).—In Amarakośa we read about Amāvāsī: "Amāvāsyā tvamāvasyā darśaḥ sūryendusaṃgamaḥ". Amāvāsī means New Moon. "Amā" means "Saha". So Amāvāsī is the Union of Sun and Moon in the same rāśi.
Once Bhṛgu Mahaṛsi cursed Agni. At that time Agni explained the importance of Amāvāsī. The oblations which are offered as homa into the fire become the food of the Devas and Pitṛs. Substances offered as homa on Purṇamāsī become food of the Devas and those offered on Amāvāsī become food of the Pitṛs. (Mahābhārata, Ādi Parva, Chapter 7).

The Purana (पुराण, purāṇas) refers to Sanskrit literature preserving ancient India’s vast cultural history, including historical legends, religious ceremonies, various arts and sciences. The eighteen mahapuranas total over 400,000 shlokas (metrical couplets) and date to at least several centuries BCE.
In Jainism
General definition (in Jainism)
Source: archive.org: TrisastisalakapurusacaritraAmāvasī (अमावसी) is also known as Darśarātri (the “night before the new moon”), according to chapter 1.1 [ādīśvara-caritra] of Hemacandra’s 11th century Triṣaṣṭiśalākāpuruṣacaritra (“lives of the 63 illustrious persons”): a Sanskrit epic poem narrating the history and legends of sixty-three important persons in Jainism.—Darśarātri (i.e., amāvasī) [is translated] this way rather than the “night of the new moon” of the Lexs., because it is the night before the new moon is visible, and in the Hindu calendar is the last night of the dark fortnight, not the first of the bright fortnight.

Jainism is an Indian religion of Dharma whose doctrine revolves around harmlessness (ahimsa) towards every living being. The two major branches (Digambara and Svetambara) of Jainism stimulate self-control (or, shramana, ‘self-reliance’) and spiritual development through a path of peace for the soul to progess to the ultimate goal.
Languages of India and abroad
Pali-English dictionary
Source: BuddhaSasana: Concise Pali-English Dictionaryamāvasī : (f.) new-moon day.

Pali is the language of the Tipiṭaka, which is the sacred canon of Theravāda Buddhism and contains much of the Buddha’s speech. Closeley related to Sanskrit, both languages are used interchangeably between religions.
Sanskrit dictionary
Source: DDSA: The practical Sanskrit-English dictionaryAmāvasī (अमावसी) or Amāvāsī (अमावासी).—(also written amāmasī-māsī) [amāvas -ṇyat, amā saha vasataḥ candrārkau asyāṃ sā. amāvasyardanyatarasyām P.III.1.122 Sk.]
1) The day of new moon, when the sun and moon dwell together or are in conjunction; the 15th day of the dark half of every lunar month; सूर्याजन्द्रमसोः यः परः सन्निकर्षः साऽमावस्या (sūryājandramasoḥ yaḥ paraḥ sannikarṣaḥ sā'māvasyā) Gobhila; अमावास्यायां दीक्षित्वा (amāvāsyāyāṃ dīkṣitvā) Ch. Up.5.2.4.
2) A sacrifice offered at that time.
3) The sacrificial oblation.
See also (synonyms): amāvasyā.
Source: Cologne Digital Sanskrit Dictionaries: Shabda-Sagara Sanskrit-English DictionaryAmāvasī (अमावसी).—f. (-sī) Day of new moon. E. amā with, and vasa to abide, ac affix; being with, or in the same quarter as the sun; also amāvāsī.
Source: Cologne Digital Sanskrit Dictionaries: Benfey Sanskrit-English DictionaryAmāvāsī (अमावासी).—and amāvāsyā amāvāsyā, i. e. amā (cf. amātya) -vāsa + ya, f. The day of the conjunction of the sun and moon, the day of the new moon, [Mānavadharmaśāstra] 4, 113.
Source: Cologne Digital Sanskrit Dictionaries: Cappeller Sanskrit-English DictionaryAmāvāsī (अमावासी).—[feminine] (± rātri) the night of the new moon (lit. of the cohabitation or conjunction, scil. of sun and moon).
Source: Cologne Digital Sanskrit Dictionaries: Monier-Williams Sanskrit-English Dictionary1) Amāvasī (अमावसी):—[=amā-vasī] [from amā] a f. = vāsyā q.v., [cf. Lexicographers, esp. such as amarasiṃha, halāyudha, hemacandra, etc.]
2) Amāvāsī (अमावासी):—[=amā-vāsī] [from amā] f. = -vāsyā q.v., [Mahābhārata i, 4644 and; Rāmāyaṇa vi, 72, 66] (only [locative case] syām, which might be a metrical abbreviation for syāyām).
3) Amāvasī (अमावसी):—[=amā-vasī] b etc. See 1. amā.
Source: Cologne Digital Sanskrit Dictionaries: Yates Sanskrit-English DictionaryAmāvasī (अमावसी):—[amā+vasī] (sī) 3. f. Idem.
[Sanskrit to German]
Sanskrit, also spelled संस्कृतम् (saṃskṛtam), is an ancient language of India commonly seen as the grandmother of the Indo-European language family (even English!). Closely allied with Prakrit and Pali, Sanskrit is more exhaustive in both grammar and terms and has the most extensive collection of literature in the world, greatly surpassing its sister-languages Greek and Latin.
Kannada-English dictionary
Source: Alar: Kannada-English corpusAmavāsi (ಅಮವಾಸಿ):—[noun] = ಅಮವಾಸೆ [amavase].
Kannada is a Dravidian language (as opposed to the Indo-European language family) mainly spoken in the southwestern region of India.
See also (Relevant definitions)
Ends with: Ashramavasi, Baitanamavashi, Behatanamavashi, Gamavasi, Gamvamavashi, Gramavasi, Kekasamavashi, Laghalamavashi, Maghamavasi, Mayamavashi, Putanamavasi.
Full-text: Amamasi, Siddhatirtha, Gupteshvara, Amavasya, Darsharatri, Mahapura, Sunanda.
Relevant text
Search found 2 books and stories containing Amavasi, Amāvasī, Amāvāsī, Ama-vasi, Amā-vasī, Amā-vāsī, Amavāsi; (plurals include: Amavasis, Amāvasīs, Amāvāsīs, vasis, vasīs, vāsīs, Amavāsis). You can also click to the full overview containing English textual excerpts. Below are direct links for the most relevant articles:
Puranic encyclopaedia (by Vettam Mani)
Trishashti Shalaka Purusha Caritra (by Helen M. Johnson)
Part 7: Exposition of the Cārvāka system (Materialist) < [Chapter I]
Part 8: Vāsupūjya’s initiation < [Chapter II - Vāsupūjyacaritra]